Becoming an excellent sniper is probably also the idea of many people, so as soon as his question was raised, more than half of them turned their eyes to Xu Fei, hoping that he could guide him to the maze.

But Xu Fei felt very embarrassed, he didn't answer in time, and his expression was a little hesitant.

To be honest, he has not received professional training as a sniper, for fear that talking nonsense will mislead others, but just now he has clearly admitted that he once sniped and defeated Joya, if he doesn't say something, I'm afraid he won't be able to explain!

Moreover, the other party will definitely think that he looks down on him!

It's nothing to misunderstand, the key is to give people the impression that their nostrils are facing the sky, which is not in line with their own personality......

The answer must be answered, and the things of the system must not be said, but how can it be explained?

He hesitated for a moment and didn't speak, someone couldn't help it first, only to see him suddenly stand up and say:

"Hah! I tell you! The trick to sniping is actually very simple, really, super easy! When sniping, remember to open the double scope......"

Gong Xiaoqiang!

As soon as Gong Xiaoqiang's words fell, he heard a bang, and suddenly the audience was in an uproar, and there was a groaning sound, and someone joked loudly: "Roll Nima, I think I hit CS!" ”

"That's it! What the hell! ”

"Silly B is here to be funny!"

……

Everyone was angry at Gong Xiaoqiang, but Xu Fei was very moved, he guessed that Gong Xiaoqiang probably saw his predicament and deliberately came to help him out of the siege!

When this roommate first came, he didn't want to see him, but after a short time of getting along, he was gradually willing to stand up for himself!

Really...... Not bad!

Gong Xiaoqiang's face was scornful, and he argued with self-force: "Originally! It's all played in the game! Don't be convinced, come to me alone? ”

Everyone laughed, and the man who asked the question before stood up and said angrily:

"What a mess you are doing! I'm genuinely seeking advice! Brother Fei didn't speak, what are you doing here! ”

Instructor Qin also smiled and said, "This classmate, please don't interrupt, the class will be out soon, you will delay everyone's time like this." ”

He then turned to Xu Fei and said, "Let's ask Xu Fei to tell everyone, applause welcome!" ”

Everyone applauded and chirped twice.

The applause is urging, but Fei Ge and I are very hesitant......

Xu Fei scolded and said, "Thank you!" In fact, to do a good job of sniping, it is nothing more than the accumulation of experience and accurate calculation, this I still recommend going to colleges and universities for systematic professional training, such as the special warfare academy has a sniper course, students who have the opportunity to ......"

Before he finished speaking, someone coaxed below: "We don't want to listen to this, we want to hear you!" Tell me about it! ”

The other chimed in: "That's it! You sniped Joya, there must be some secret, share it with everyone, okay? ”

Many people are coaxing, and Xu Fei must talk about it.

Teacher Qin suppressed the noise with both hands and said, "Don't make noise, everyone!" Actually, I think the questions you asked are too general, sniping is a very complex course, and there should be more aspects involved, such as psychology, sniper points, and the choice of sniper timing, which I can't finish in three days and three nights. Can you be more specific? That's how easy it is for others to answer! ”

The man then got up and said: "Then let me ask again, that is, we all know that when sniping, we must consider some factors, such as temperature, humidity, wind speed, etc., but how do these factors affect the accuracy of sniping, can you tell us more about it?" ”

You know it's so! Xu Fei slandered the ......

Instructor Qin didn't let him go, and said, "That's a good question. Xu Fei, I think you must have a unique experience in this, can you share it with you? ”

Xu Fei's head was as big as a bucket, and for the first time, he raised his hand and scratched his head, only to feel that he was completely roasted on the fire.

Alas......

He forced a smile and said, "Huh...... This, I don't know if it's right or not, it's just my own situation, I don't dare to take it out and make an ugly ......"

As soon as Instructor Qin heard that there was a play, how could he let him go, and instigated everyone: "Then let's welcome Xu Fei with warm applause, and share his unique experience with everyone. ”

"Good!"

Everyone agreed and clapped their hands!

Okay, okay...... Let's Fei Ge reluctantly make it difficult! Xu Fei is helpless!

Gong Xiaoqiang's interruption just now objectively did buy him some precious time, Xu Fei thought of something, but he could only use it to fool him first.

Let's deal with the current level first!

"We know that there are three main factors that affect long-range sniping targets, the target, the gun and the environment.

Let's talk about the target first, mainly including the target distance, movement speed, movement direction, and inclination angle...... Guns, including bullet ejection velocity, ballistic coefficient, bullet weight, bullet diameter, ballistic coefficient...... Environment, including what the instructor just said, wind direction, temperature, humidity, pressure, altitude ......"

He had learned some theoretical knowledge in 506, but he didn't have a deep contact, so he could only speculate and sell them.

“…… As for the principle, it is very simple, the increase of humidity and temperature will reduce the resistance of the air and move the impact point upward. The principle of thermal expansion and contraction, the air will expand when heated, and under the same weight, the volume increases, the density will become smaller, and the resistance to the warhead will be smaller, and the air density will decrease, the warhead resistance will decrease, the warhead speed decay will be slower, and the drop of the warhead at different distances will be smaller, which is equivalent to the impact point of the projectile to offset upward......"

"Can you be more specific? That is, how should we correct the trajectory? After all, when sniping, there is usually only one shot. I think this is more important! The man stood up again.

Xu Fei smiled bitterly and sighed in his heart, it seems that he can't do it without a trick!

Really......

It's better to just fool around!

"Okay, I'll move on......"

I saw him get up, come to the blackboard and grab a piece of chalk, Zhong Dachun and Teacher Qin consciously moved some positions.

"I just mentioned a couple of important factors, then, the ballistic coefficient G1......" he said on the blackboard, writing G1, continued:

"Temperature correction factor Tc......

Barometric pressure correction factor Pc......

Wind repair is biased to the positive value of Wi......"

He wrote about a dozen factors in a row, assigned variables one by one, and then began to set mathematical formulas, which is the latest achievement of his recent misuse of advanced mathematics!

High math is difficult, but sometimes it is a powerful tool to solve problems!

He was sure that few people below could understand it!

"The temperature correction coefficient Tc is mainly converted by the ground air temperature and the standard air temperature, the barometric pressure correction coefficient Pc is the ratio of the standard air pressure to the ground pressure, and the wind deviation value is ......obtained by taking the nonlinear function of the range distance R, the wind speed Vw, the ballistic coefficient G1 and the muzzle velocity Mv."

Another series of mathematical formulas smashed down!

What trigonometric functions, damping formulas, what higher-order derivatives, median value theorems, what sum difference products, Lagrangian, etc., some of them are indeed learned by Xu Fei, and some are used with gloves after reading them!

Anyway, how to come easily, pretending to be better, of course, the deeper the better!

It doesn't matter if he talks nonsense above, everyone below is instantly stunned, and they are all stunned!

Even Teacher Qin is no exception!

Who would have thought that there was such a profound sermon in between?

Who would have thought that Xu Fei would actually use advanced mathematics to give them a lecture?

How does it feel like you're listening to a book from heaven?

Xu Fei took in everyone's expressions, and was secretly happy in his heart, is this the effect you want......

There is also a reason why he chose to use high numbers to fool. Usually in high math class, he can see very clearly in the back, at least ninety out of a hundred people are sleeping, and the rest are either reading miscellaneous books or bragging.

This sleep is also very interesting, there are all kinds of sleeping methods: some sleep with their heads directly on the table, some sleep with their heads buried in their arms, some sleep with their heads propped up, some sleep with their heads back on the table behind them, and some sleep with their backs upright.

Instructors generally don't care, just teach their own classes and leave at the end of the day. Some people woke up halfway, because they didn't listen to the lecture properly, and felt ashamed, so they silently took out a small bag of coffee, and when there was no water, they tore open a small mouth and swallowed it dryly.

Can anyone understand the advanced math level that comes out of this sleep?

Hehe......

He changed the chalk and continued:

Let's convert it to the angle value Ew...... Square first, then take the function...... The final result is obtained, and combined with the wind deviation correction circle scale of the scope......"

He applied it one formula at a time, and soon filled the half-screen blackboard, densely packed with data, formulas, and various high-level and low-level operators, Xu Fei couldn't remember it clearly, anyway, it was just one word:

Dry!

If you can remember the formula, just pile it up!

"Anyway, just calculate this value and correct it......" He threw away the chalk head and clapped his hands, and then looked at the crowd, all of them with a little crazy expression!

Some buried their heads deeply, some pretended to nod from time to time, some opened their mouths and stared blankly, some scratched their heads, and some held a pen and didn't know how to record......

Ahem...... Xu Fei seemed to have a smile on his face, but he was slandered in his heart:

Are you satisfied?

Still want to hear it? Good! I'm going to give you another hard one!

He took another piece of chalk and said, "Well, it seems that someone doesn't quite understand?" Then let me give you a simple example, taking the Soviet-made SVD sniper rifle to snipe a moving target 600 meters away as an example, assuming that the opponent's movement speed is 2m/s, the SVD fires a 7N1 7.62mm sniper bullet with a muzzle velocity of 830m/s and a wind speed of 5m/s......

…… So let's calculate it according to this formula and get the ballistic coefficient...... Well, it's 0.498, and the wind repair is positive......"

He operated as fiercely as a tiger, and began to set formulas on the blackboard on the other half of the screen, and finally came to a conclusion:

“…… The final result is that the angle value that needs to be corrected is 1.78 dense, the wind deviation correction circle is 0.5 dense, and the 1.78 dense level needs to be corrected by 3 to 4 scales. In other words, this is the scale value that we need to correct, just turn it on it. Do you understand this? ”

This result is not nonsense, he has studied it before, and naturally knows that it only takes 3 or 4 scales, anyway, is it confirmed, as for how it came about......

The devil knows!

When everyone heard this, they nodded almost at the same time as if they were pecking rice, and many people slandered in their hearts:

"MMP, it turns out that every successful sniper must first become a good math master......"

"What is he talking about, it's so complicated, I don't know how to ......"

"Wow! He's so good at high math? It's a shame not to be a university professor at this level......"

"Oh, that's amazing! But I still think it's more convenient to open a double mirror......"

Some people even compared Xu Fei's previous academic achievements, and said in their hearts:

"It turns out that people can snipe and defeat Joya, not for nothing!"

Take a system and go to the army