"Got it?"

"Yes."

"Louder, got it?"

"Yes!!"

"Very good, next, let's learn, there is a rule that if the military power of country C is so strong that it overshadows our country, what should you do for the legal rights that our country should enjoy on their land."

Xiao Tong wanted to ask: Since it is someone else's territory, why is your right still legitimate with someone else, but he is afraid of more painful torture than Fang Cai, so he can only say "yes" resignedly.

Twenty-five years of the Republic of China——

In the training camp of the Underground Fortress -

Pushing open the glass door of the chemistry room, the young man who walked in had a childish face, his face shone with a trace of the pursuit of hope that did not fit in with the environment here, the sleeves of the wide military uniform were a little long, and the boots began to close his feet, so that he could not walk without obstacles, but when he smelled the fusion of various stimulating smells in the chemistry room, he still couldn't help but cover his nose.

"Today's teaching is chemistry, come here."

The doctor in the white coat wasn't actually a doctor, he was one of the researchers of the so-called "Operation Jade Crush" potion, and he just happened to be assigned to teach him something.

"In industrial applications, silver azide is the only one that can be mixed with other explosives. At last year's joint symposium of scholars, Brown Swallowe, a scholar from the United States, for the first time publicly reported that silver azide is used as a detonator charge in underground mining, so silver azide is only used in special small detonators. Because silver azide has a strong explosive force, it has better and better application in these aspects than lead azide. At the same time, it is suitable for application in initiating charge charges with high requirements for thermal stability. ”

Therefore, the initiating charge needs to have the ability to burn rapidly to detonate, but whether it can actually be used as an initiating charge also depends on its detonation ability. The so-called initiating ability refers to the ability of the initiating charge to ignite other explosives to achieve stable detonation after the explosion of the initiating charge. The stronger the initiation capacity of the initiating charge, the shorter the detonation growth period required for the agent to achieve stable detonation. The amount of agent consumed in the initiation process is an important indicator to measure the initiation performance of a drug. The limit amount of explosives refers to the minimum amount of explosives that can be detonated. Usually the crystalline black gold that can detonate 20~30 mg and achieve the minimum amount of initiating charge required for stable detonation. ”

The physician who was talking and operating, wearing gloves, picked up the lead trinitroresorcinol and black sorkin in the test tube and put them in a water bath oven for later use, and then used an analytical balance to weigh out 0.030 g of black sorkin to an accurate point of 0.0002 g, placed it in a copper tube shell, and pressed the drug at a pressure of 117.6 MPa.

The doctor is different from the instructor who taught the "quintessence", he has no expression on his face, and he will not instill any subtle words in you, he will only state the facts seriously.

What he learned yesterday was that the chemical element was barium, the day before yesterday was boron, the day before yesterday was phosphorus, and the day before yesterday was chlorine......

These elements are important, without exception, for one reason, and they can be lethal weapons in some special operation.

Barium is a white metal, and it is also a few chemical elements in the table, and the metal that can pass X-rays is generally covered with an oxide film on its surface, and through the protection of this oxide film, no chemical reaction will occur inside, so that it is relatively stable. Its elements and compounds have a certain sweetness, but they are highly toxic, and even a small amount can kill people.

Therefore, barium is mainly used as a hardener for alloys, such as the representative bronze products. It is not usually used as a lethal weapon, but here it is emphatically marked.

Boron is a semiconductor material with a ferrous metallic luster. Boron is weaker than copper and silver, about one-tenth the size of copper and silver, and the metal's conductivity decreases as the temperature rises. This is not the case with boron, which has an increased electrical conductivity as its temperature rises. Its hardness is second only to diamond.

Borax is a very important boron-containing mineral and compound, boric acid can be obtained after reacting with sulfuric acid, and the aqueous solution of boric acid has a certain bactericidal effect, but because it may cause poisoning, rash, acute gastroenteritis, blood pressure drop, muscle spasms, shock, etc., it is no longer used.

But in the minds of physicians, it has an important marked use: to make a nuclear reactor sunscreen.

Organophosphorus compounds can be described as neurotoxins, which have previously been used as chemical weapons on the battlefield. Because of its strong toxicity, it has caused the death of many people engaged in agricultural work in agricultural production, but even these seemingly non-toxic phosphorus elements can still produce chronic poisoning in long-term high concentration exposure or large amounts of use.

Chlorine, a toxic gas used by the German army in 1915. Chlorine is a pungent yellow-green gas, and the element chlorine is a halogen. The content in the air is very small, only about 0.003%-0.006%. If it adheres to the mucous membrane of the nasal cavity or throat and reaches a certain concentration, it will vomit blood due to poisoning, and even life-threatening. Therefore, chlorine was used as a toxic gas by the army of country G during the First World War.

On April 22, 1915, in the Ypres region of Belgium, when the troops of country G and the army of country F were engaged in a fierce battle, the army of country G suddenly released yellow-white smoke, which drifted to the position of the army of country F in a tailwind. As soon as the smoke entered the trenches, the screams of the soldiers of country F were immediately heard, and they fell to the ground...... The scene is miserable, and it is terrible.

At that time, the army of country G released 170 tons of oxygen, and about 5,000 people of the army of country F died as a result, and about 14,000 people showed symptoms of poisoning, which was the first large-scale use of chlorine as a chemical weapon in human history, and it was also an important link that could not be ignored in the second war of Ypres.

In the Second Battle of Ypres, the army of country E used chlorine as a chemical weapon in September of the same year, and the army of country F in February of the following year. Since then, gas masks have been used to combat chlorine. However, chemical phosgene, which is 10 times more toxic than chlorine, and mustard gas, which causes skin burns and emphysema, and impaired liver function, are gradually appearing.

The physician weighed 0.03 g of treated lead trinitroresorcinol, 0.020 g of the measured explosive and 0.020 g of black suokin, accurate to 0.0002 g, and placed them in an aluminum reinforcing cap with a silk pad in turn, pressed the medicine at a pressure of 49.0 MPa, and made a record.

"If you don't understand how it works, you won't be able to make a weapon of mass destruction."

With some worry, the young man watched the liquid and gas that was precipitated directly into the sewer, and said with some hesitation, "Excuse me, sir, these wastes are discharged directly without direct treatment, if they seep into the ground, then the surrounding soil is likely to be uncultivated for hundreds of years, even the plants that grow are poisonous, harming animals and people, does it really matter?" ”

The doctor wore protective glasses, weighed 0.020g of black sokin on the scale, accurate to 0.0002g, and successively put black sokin and the aluminum reinforcing cap of the pressed medicine into 2 copper tube shells, and pressed the samples into several rounds with a pressure of 49.0 MPa, and numbered, and recorded the quality of each number of measured explosives.

At this moment, time seems to be stagnant, and the blood on the human heart is no longer supplied, only the interaction of those chemical reagents, and the sound of "bang".

"Have you ever wondered why the 'general' is among so many people, and only you are left?"

The young man shook his head with a confused look, and the doctor sneered lightly, "Do you think that fighting a war is child's play, or is it child's play for the livelihood of our country's rise?" ”

"Mr. Mingjian, the student never thought so."

"Never?"

The doctor's voice paused slightly, and then the cold words slowly discharged along with the waste water and exhaust gases, "I know that your history class has already been taught to you by other instructors, but that instructor once revealed that he was not satisfied with your summary statement, and now it seems that indeed, he is not wrong." ”

"I don't want to say anything about what he has already told you, only one point, you have to pay attention, war, there is always only life and death, there is no peaceful coexistence, death and injury, it is inevitable, today we are for the prosperity of our country, that is the result of their own rebellion, if it really causes large-scale deaths, then the murderer is also them, it is definitely not our turn to bear this responsibility, I want to ask you is, when you care about the life of their country, Ever thought about the bodies of the soldiers whose country shed blood on the battlefield? ”

The young man's eyes were red, and he didn't respond.

"The problem of waste water and exhaust gases you mentioned, of course, there are clear international conventions, no scientist has never sworn to the word 'science' when he is put into an experiment, just like every doctor will raise his fist to Nightingale before entering the profession and declare it, but time has changed, if it is not for the side of the war that has been persecuting us, how can we live like a mouse in this desert underground, and carry out our 'jade crushing operation' here, but we cannot reunite with our relatives? Who do you think is responsible for all this?? ”

Many of the waste raw materials generated by science must be analyzed before they can be discharged into the general cesspool. The most obvious example of the danger and persecution is DDNP.

DDNP production wastewater mainly comes from reduction, diazotization, washing process and washing ground, equipment and cleaning tools drainage, DDNP wastewater has three characteristics: large amount of wastewater, deep dyeing degree, complex composition. As a result, wastewater treatment is difficult.

The mother liquor of DDNP contains a lot of small suspended crystals, and crystals will precipitate after the mother liquor is cooled, so if they are not destroyed, the crystals will precipitate in the sewer or drainage ditch, which is dangerous. The method of detonating DDNP mother liquor is to decompose it with sodium sulfide, destroy its diazo group, and make it lose its explosiveness. It is worth noting that the reaction between DDNP and sodium sulfide is very violent, and hydrogen sulfide and nitrogen will be discharged during the decomposition reaction, and heat will be released. Therefore, solid sodium sulfide should not be added to the wastewater to avoid local overheating and explosion accidents.

Even after destruction, the mother liquor still has high alkalinity, and its composition contains nitrobenzene and phenols and other substances, which cannot be directly discharged, and this wastewater must be further treated to meet the discharge standards before it can be discharged.

However, the discharge here cannot be directly discharged into the ordinary wastewater pond at once, and further testing by relevant personnel is required before it can flow out.

Fbaylou once said in Madame Bovary: "The poetic influence of nature is often given to us by writers." ”

In fact, when countless countries realize the convenience brought by chemistry, but also bring bad luck, they have consciously exerted their subjective initiative, used all resources, and reduced the evil consequences of chemistry a lot, which is already a gratifying thing in itself.

Because if one day, the earth is densely packed with the fingerprints of the croppers, and there are no footprints of the cuckoos that come to sing in the spring, then the feelings of regret at that time really need to be given a poetic meaning to nature, which no longer exists, with the help of writers.

Therefore, for all the countries in the world that are immersed in the great joy brought by industrial civilization and cannot extricate themselves, the first to propose the control of chemical reagent emissions at the United Nations cannot be said to be the hero of the world, but at least the first pathfinder in the wilderness and the earliest voyager in the storm.

Zhou Zuoren once proposed in "On National Literature with Friends": "We must acupuncture the paralysis of the cowardice of the nation; We want to eliminate the poison of national obscenity; We must cut through the carbuncle of the national deafness; We want to castrate the madness of national arrogance".

The "arrogant madness" here also means nothing more than ignorance and arrogance, as well as cloudy eyes that cannot see the truth of the matter.

Before the signing of the treaty in 1895, Mr. Rong Hong, who has made outstanding contributions to the country's study abroad career, once sent more than 120 students to country A when the country was in crisis, and created a group for the later country - such as Zhan Tianyou, the chief designer of railway engineering who saved the national railway industry and stood on top of the world, Tang Shaoyi, the first foreign premier of the Republic of China, and the founder of the General Department of Shipping and the police system...... These are countless talents.

And even so, Yung Hong is slightly inferior to the one who dared to roar out the first cry in the world, which is rich in the conscience of a scientist and a pioneer who has the heart of an intellectual.

If you think that you have received the education of this civilization, you should make the person who gives it later enjoy the same benefits.

With Western scholarship instilled in China, China is becoming more and more civilized and prosperous.

There are multiple reasons for the formation of the Mandarin Duck and Butterfly School, both inside and outside literature.

From the historical situation of the late Qing Dynasty and the early Republic of China, the rapid overthrow of the late Qing Dynasty and the initial formation of the Republic of China society brought about the shaking and weakening of the ethical normative order. The increasing richness of urban life has also provided new resources and space for literati to write, and in the process of the development of the newspaper industry and the dissemination of literature, the gradual emergence of market factors has cultivated a direct soil for secularization. Representative writers of the Duck and Butterfly School such as Bao Tianxiao, Zhou Shoujuan, and Xu Zhenya......

All of them are newspaper editors and popular writers—they can be said to have heard the voice of the times at the time of social changes and evolutions, witnessed the change of the old and the new in the order of reality and daily life, tasted the joys and sorrows of the new civilian society, and practiced the new creed of urban civilization that had just emerged.

But no matter how many reasons there are, in the final analysis, there is only a domineering and gentle word in mathematics that can describe it: there is and only.

There is only this reason, there is only this person, there is only such a thing, and you are the first to shout out.

In his later years, Galileo was criticized by his students for not daring to adhere to heliocentrism: "A country without heroes is unfortunate. ”

"No, a country that needs heroes is unfortunate." Galileo replied.

There are so many cities in this world, and there are so many taverns in this city, and you have come to my territory.

The young man's head was pressed very low, but he stubbornly refused to shed a tear, and the doctor looked at him expressionlessly, turned around and continued the experiment.

"The C-J detonation wave velocity can be calculated in two categories: the first is the trial method, and the second is the Newton Reifson iterative method. Due to the following two reasons, the trial method is generally not as good as the Newton iterative method: (1) if the amount of computation is the same, the accuracy obtained by the trial method is lower; (2) When using the trial method, it is necessary to assume the approximation of a solution each time, so the accuracy obtained is related to the experience of the computationist, and I will teach you how to calculate the velocity of the C-J detonation wave using the Newton Revson iterative method. ”