The ignition source is a pyrotechnic igniter with a total energy of 10 kilojoules that ignites the gas mixture with a lag time of 0.6 seconds. The ignition agent has a mass of 2.4 grams and consists of 40% aluminum powder, 30% barium nitrate and 30% barium peroxide.

The ignition source is ignited by an electric ignition head, which is located in the geometric center of the explosion chamber. A pressure sensor is installed on the wall of the explosion chamber to determine the explosion pressure, and the pressure sensor is connected to the recorder.

The proposed steps are: put the gas sample into the propagation vessel and pressurize it to 2.0 megapascals with compressed air; pump the pipeline into a certain vacuum state to ensure that the explosion chamber is under atmospheric pressure when ignited; start the pressure recorder, open the valve of the propagation vessel, ignite the ignition source with a lag, and record and measure the explosion pressure; after each experiment, the explosion chamber should be blown clean with air to obtain the explosion pressure and pressure rise rate.

Preliminary determination of the maximum pressure rise rate of the gas mixture: kx less than 20 MPm/s; or less than or equal to 20 MPa per second and greater than or equal to 30 MPa per second; KX is greater than 30 megapameters per second.

As long as it is within this zone, the spread of the gas can affect all air-breathing creatures in the underground fortress. In the laboratory, the old man watched the young man's series of operations in horror, and he still couldn't help but question-

"What if that doesn't work?"

"Generally, reactions can be divided into two categories: simple reactions and complex reactions, and simple reactions can be divided into single-molecule reactions, double-part reactions and three-molecule reactions. The so-called single-molecule reaction refers to the reaction in which only one molecule participates in the reaction. A bimolecular reaction is a reaction in which two molecules of the same or different class collide. The so-called trimolecular reaction is a reaction that occurs when three molecules of the same or different types collide with each other. Since the probability of a three-molecule collision is small, the reaction rate is extremely slow. ”

"The previous gas distorted the reaction process of a molecule in the cell division that took place at the end, so that the nerve center of these things could not tolerate the second command, here I downplayed the analytic formula of the first part, these things after receiving the secondary division of these gases, the nerve center will produce redundancy, you use the influence after propagation, give orders, these things will hear your voice in the future, respect you as the master."

The old man listened, and without any hesitation, he turned the demon's valve again without mercy.

The previous time the valve turned, he turned tens of thousands of soldiers into the devil of hell, and this time the valve turned, he will make them his minions. In fact, from the time he first sold his soul to the "General", he knew that this day would come sooner or later, and he would always say goodbye to the best things in the world.

Goodbye, my moon song, my breath, my day, my golden day, my flame.

But he was glad that when he was on the verge of death, he always woke up in time; As soon as the war broke out, he immediately turned over to his preferred side. And at this moment, his heart opened sail to the wind of Yan Shan, and he wanted to go to the shady island wherever he was—

Run through the shade like a musk deer, mad at its own scent. ...... / There is nothing for it to sing, / Even the berries on the hedge have been broken by frost, / or eaten by other birds, but he is on high places, / Alone welcomes another day of hunger. / The olive trees are white, and they are in the wind—/ Like white-haired men hunched over, / Their branches are like vines, / The unloaded weight fills the bucket, and in which, / the red and golden foam is drowned in the middle of summer—

God also often weeps with the eyes of the clouds over all that He has created.

The distribution of the explosion overpressure with the axial distance is reflected in the trend of first increasing rapidly, then slowly decaying, and finally rising again near the closed end. The gas fluctuation reaction located near the pipeline has just started and the pressure is lower. There is a 1-meter-long obstacle between 0.5 and 1.5 meters in the pipeline, which causes a flow, expands the reaction surface, stimulates a strong chemical reaction, and accelerates the peak surface of the gas, which is very close to the shock wave velocity, so the peak overpressure rises rapidly.

The gas leaves the obstacle area, the chronograph hand out of the valve accelerates and weakens, and the speed begins to decrease, and with the increase of the gas volume, the gas reaction time increases, and the acceleration time of the shock wave increases, so the attenuation speed slows down with the increase of the gas volume, and the gas volume is the largest when it reaches 4.5 meters of gas, and the peak overpressure attenuation is the slowest.

"Whew-"

When the shock wave reaches the closed end of the pipeline, reflection occurs, and near the closed end of the pipeline, the two-way shock wave acts together to cause a secondary pressure boost. Since the two ends of the pipe are closed, the shock wave will be reflected when propagating through the pipe, so that the pressure will oscillate, and a secondary overpressure will occur. The closer you get to the closed end of the pipe, the more pronounced the pressure oscillation becomes.

The old man saw through the closed laboratory glass the clamoring walking corpses outside, and after the gas overflowed, it began to slowly fall silent, and the decaying light in his eyes slowly turned cloudy, as if there was a girl in a white dress, and the soft gaze revealed in an instant was like the sister who once knitted bamboo dragonflies for herself on the hillside where poppies were in full bloom.

"Sister—"

Is that you? / I'm going to swear with that loose curly, / Every Aegean wind chases it, / I'm going to kiss your pink cheeks with those long eyelashes, / I'm going to swear by those deer-like eyes, / You are my life, I love you.

"Sister—"

After the warriors who became the "Jade Crush Project" were transformed, their faces would stop aging, and they would forever freeze at the moment of death of their thoughts, reaching the so-called "immortality". But why, why can't my sister come back to contribute to my country?

It seems that you have only fallen on the cliff for a while, but you have not fallen off the cliff, and my beloved relatives can no longer come back from the hillside where the poppies bloomed in their memories.

There is a dead silence on the bridge, / Only the returning herd staggering...... / The footsteps of his lover alone, / Never stumble to roar at his heart. / Occasionally, there was a rustle—/ There was a little squirrel jumping in the treetops. / It leaps on a pine branch, / Tramples a piece of snow on Daria's body, / Daria stands, / Frozen in her own magical dreams.

You may not be able to get together for many years, you may never see each other again, why are you silent.

"Whew-"

The gas is still discharged outward, and there is obvious secondary overpressure at the axial distance of 6.525 meters, 7.525 meters, and 8.275 meters, and the closer to the closed end of the pipeline, the more obvious the pressure oscillation phenomenon is. As the amount of gas decreases, the shock wave velocity gradually decays. Since the amount of gas will affect the time of the chemical reaction, the more the amount of gas, the longer the duration of the chemical reaction, and the longer the acceleration time to the shock wave, the greater the shock wave velocity.

Therefore, the more gas there is, the greater the severity of the shock wave. At the same time, the difference in the velocity of the shock wave in the later stage is very small, and in this section, because the initial gas volume is the same, under the action of the shock wave, the gas volume and foam degree in this section do not change much.

After the 1 meter position, the speed of the shock wave with different gas volumes began to appear significantly different. In the 1 to 2.25 m section, 2.5 m, 3.5 m, 4.5 m long gas volume, this section is full of gas, therefore, the shock wave velocity difference between these three gas quantities is still not large, and 1.5 meters long gas volume, only part of the section has gas, obviously the chemical reaction in this section is very short, the acceleration effect of the chemical reaction is significantly weakened, and the shock wave speed will be significantly smaller.

In the small hole of the pipe, there were countless gases, and the girl in the white dress standing in the group of corpses, with a solemn face, looked at herself for a moment, full of heartfelt joy.

The old man's hands pressed against the glass almost broke it, and tears oozed from his eyes—it was her, it must be her. It's my own sister!

We stayed under the corridor at night, looked up and watched the dark shadow at the bottom of the eaves, watched the cool moon haunt the clouds, and the stars appeared and disappeared. The moonlight falls gently on your face, this lonely dusk, with fog and rain, I feel its sigh in my new loneliness.

On the placket is the lotus fragrance of the oars when you swim, / Between your sleeves are your tears of joy, your sleepy lipstick, / And the shadow of a mallow flower under the moon, / It is the shadow of your chest when you close your eyes, and the yellow bergamot from between your outstretched fingers - / Gives off the old faint aroma; / Begonias bloom in the corners of the mossy stepstones, / Like autumn tears dripping quietly; / On the rockery that absorbs water exquisitely in the fish tank, / The red on the back of the Pu'er grass leaves; / There is a small tea-colored circle chair in front of the small courtyard - / once supported my arm in the past.

My sister—

The peaches are ripe. But, it's already rotten. It still hangs tremblingly and dangerously on the tree, leaving it to future generations with its vivid memory.

"Hanshu Note": "Moon Order" - the moon of mid-spring, the first rain, the beginning of the peach and the beginning of the flower. When covering the peach Fanghua, there is rain, the river valley is icy, the crowd is lewd, and the waves are prosperous, so it is called the peach blossom water. Twenty-four flower trade winds, starting with plum blossoms, and ending with neem.

It turns out that no matter how beautiful it is, it will eventually pass away, and my sister, who has been buried on the cliff of the poppy blooming hillside for a long time, even if she did not die at first, took the initiative to throw herself into the arms of death after I turned the hell valve that buried tens of thousands of soldiers.

When Romeo died in Juliet's arms, he once said, "Dear Juliet, why are you still so beautiful?"

Could it be that the void death, the emaciated and abominable demon, is also an amorous seed, so he hid you in this dark cave to be his mistress? In order to prevent such a thing, I will always accompany you, and never leave this long night of secluded palace; I'm going to stay here with your maidservants, the maggots; Yes! I will rest here forever, free from the bondage of doom from my mortal body, who is tired of the world. Eyes, look at your last look!

Arms, be your last hug! Lips, ah! Breathe through the door, and with a lawful kiss, make a permanent pact with the snaring death! Come, bitter guide, desperate pilot, and now dash your weary ship over the rock! For the sake of my love, I toasted this! I died in this kiss.

Repentance is an unsinkable ship.

I was buried in the belly of a fish, and my soul was fed to the devil.

The obstacle suddenly accelerates the gas turbulence, increases the reaction surface, intensifies the chemical reaction, and causes the shock wave velocity to increase rapidly. After 2.25 meters, the impact of the obstacle on the shock wave is already very small, only the deflagration of the gas itself has an accelerating effect on the shock wave, and the acceleration effect is obviously weakened, so the shock wave speed begins to gradually attenuate.

At the very end, the maximum value of the shock wave velocity occurs after the maximum explosion peak pressure, and the reaction is more violent, and the variation trend of the maximum pressure rise rate along the axial distance is consistent, which shows that it increases rapidly first and then gradually decays. Finally, under the action of obstacles, the end flow of the gas intensifies, and the chemical reaction becomes more violent.

Outside the obstacle area, there is no acceleration of the obstacle, only the acceleration caused by the deflagration of the gas itself, and the maximum pressure rise rate begins to decrease. When the shock wave is transmitted to the closed end of the pipeline, under the action of the closed end, the shock wave is reflected, and the maximum pressure rise rate increases.

"Whew-"

The last gases were like a stubborn resistance that lasted for a long time, and disappeared into the air.

The second gas projection was completed. And he couldn't be happier.

This kind of transformation is common when people are dying, and even tigers lick the cross.

There was no more strange color in the eyes of the girl in the white dress, only the hollow. The glass door of the laboratory opened, and the old man stepped forward and gently stroked the girl's face, none of these things would attack him now, but - just- the girl in front of him, not a sister, had found the direction of his soul. The old man gently hugged the girl in his arms and couldn't help sighing.

My love for you is not in vain.

"Dear God" – if you really exist, teach me how to hide this emotion that I never know how to express. But neither the bomb nor my broken heart can stop me from walking barefoot with you through the Jasmine Square in June. Although the scenery of my hometown is not there, I am willing to accompany you to spend the few years and scenery I have left.

Why are the flowers gone? / My passionate love pressed it to my heart, and therefore the flowers were grateful. / Why are the strings broken? / I play a syllable that it can't beat, so the string breaks. I didn't want to raise my hands for anything other than hope, nor did I crush joy into dust to squeeze the wine of pain.

The light is under the frowning clouds, like a child who has been beaten, with tears on his gray face, and the wind howling, like the cry of a wounded world, but I know that I am trudging to meet you.

There are pearls in the sea, and there is a star in the sky, and my heart, my heart, my heart, there will only be you left in the future—

"What you said before is the first thing, the second thing you need me to help you complete, what?" It is no longer possible for the corpses to attack themselves, and being in this underground fortress is equivalent to being the king of this place—with one of the strongest castles in the world, with countless servants, and with the resurrection of the dead, my sister.

The young man calmly looked at everything that was happening in front of him, and he didn't overthink what entanglement this girl in white had with this person before.

"If you don't succeed in killing them, I need you to send him a message."

"Huh-"

The old man stroked the woman's face and smiled, "Now the walking corpses here are all under my deployment, why should I listen to your orders?" ”

"I can make you live with one thought, or I can let you die with one thought, do you really want to go against me?"

The old man turned around, and tens of thousands of walking corpses stood aside behind him, ready to attack, as long as he gave an order, he could tear this terrifying young man who was almost a demon to pieces, however, in the young man's fearless waves, he finally chose not to do so.

"What kind of message do you need me to bring?"

"I need you to tell him—or they—" The young man spoke slightly, calmly uttering something that sounded almost heavenly to the old man, and when he finished speaking, the young man pushed aside the corpses and walked out under the old man's gaze.

"Why? Why can't you tell him for yourself when you have so much power? —" The old man shouted at his distant back.

"I can't—because 'those people' are watching me too closely, and more importantly—" sighed, "I have already discovered in Fan Li's Golden Treasure that he is him." "How can I hide a word in the world under such great means as he has? As long as there is a place for him, he can reach it, and he can't hide a person or a word anywhere.

Only in this deep invisible underground can he leave a complete message to ensure his absolute safety, and in return, this old man needs to help himself with these two favors.

Although twenty years later, it is very likely that "he" will still organize the best Snow Leopard commandos in his organization to come hostage to another self, but this time, this time he is fully prepared so that this sentence will only be known to the designated subject, and not to "him".

This is the reason why he had so many maze in the tomb of King Guangling, Fangla Underground Palace, and even Fan Lijin's hometown: since you have monstrous means, so that the whole country can be used by you, and the resources of the whole country can be tilted towards you, then, the underground you can't see is my layout and planning.

The man's back disappeared in front of him, and there seemed to be no trace of his existence except for the fluttering words that remained in the air.

But if anyone who sets foot in this area 20 years later can see this scene, they will fall into great shock and self-doubt: this young man is none other than Li Reform, who has disappeared for nearly 20 years.

Li Luant's throat was dry and difficult, "What we see from beginning to end is not an illusion, but this space, which is a huge illusion!" ”

The power of this sentence was so great that the three of them were directly shocked.

"Shell Lang, what are you talking about? You just fiddled with the angle and beauty for a long time, and such a sentence came out? "I thought it was bad enough to be trapped in a fantasy, what could be worse than that? Answer: Li Green Ant's.

In fact, when Li Luant decided to do this experiment, everyone was in favor. The situation is already very bad, and it doesn't hurt to try, even if this experiment is not successful, the big deal is still trapped in the illusion and can't get out, how bad can it be? As it turned out, there was only worse, not the worst.

The original attempt was tried, but the result was that the attempt was death.

"Ben Liangzai knows that the head cantilever beam cone piercing stock just now, just patronizing the wall to borrow the spring light, and you don't care about Ben Liangzai's life or death at all!!" In the next project, add a pot lid to the Pacific Ocean; Or take down the Great Wall tile project! But these are big projects, and if you want to do small ones, you can put gold teeth on the ants.

If you think the project is too small and not challenging, you can also make an insulated shell for the sun, wrap the sun, or install a runway for the equator, or install an elevator for the Himalayas.

So what kind of chestnut titty cloud room has not achieved the effect of boiling water to boil the Yellow Sea, nor has it achieved the achievement of fragrant fluttering around the equator several times - shouting and prostituting pigs? The nest melon is not light, and he has been busy in vain-

Black glasses are the wisest, "Anyway, now knowing what the situation is right now is already a big achievement-" Looking at Li Luant, "Do you have a way to break this game?" ”

Li Luant hesitated for a long time: in fact, he had an idea, but he was afraid that he would fall short as he had just done, and in the end he didn't help anything, but caused a lot of new troubles, so he didn't dare to speak.

"There's a way, I'm afraid—"

Black Glasses said calmly, "If you have any ideas, do it boldly, if something happens here, she and I will be there, and you will not be hurt." ”

This sentence was really like a reassuring pill, and instantly opened up Li Luant's second vein, and nodded fiercely.

"Well, work hard for the rise of the nation!!"