The category has dropped to second place. Brothers, do you still have your monthly tickets?

As he sat on the jeep and hit the road again, Qin Chuan kept thinking about a question... In fact, the best material for making armor-piercing bombs is not tungsten, but depleted uranium. The main component is uranium 238, which is used to prepare radioactive rays such as uranium 235. The by-product of the isotope is what is known as a depleted uranium bomb.

Depleted uranium, like tungsten, has the characteristics of high density, high hardness, and high toughness, which makes it very suitable as an armored projectile... The high density makes it have greater kinetic energy after being launched, and the high hardness allows it to penetrate the target. Armor, high toughness means it is not easy to break.

In particular, depleted uranium bullets also have self-sharpening properties that tungsten core bullets do not have.

Most materials are self-blunting. For example, a sharp kitchen knife becomes dull with more use and needs to be sharpened to regain its sharpness. The same is true for tungsten core armor-piercing bullets. When it hits the target and penetrates the armor, it will be damaged due to collision and friction with the armor. As it becomes duller, the penetration will become worse and worse.

This is not the case with depleted uranium bullets. After it hits the target, its tip will peel off in a small area like a crystal, so it keeps the tip sharp. This will make its armor-piercing effect much better than that of tungsten-core bullets.

But in the end, Qin Chuan still didn't put forward this idea... On the one hand, it was because in this era, tungsten core bombs were completely sufficient and there was no need to make it so complicated. On the other hand, this technology, that is, refining uranium 238 and using it as material to make armor-piercing projectiles, was too advanced, and Qinchuan could not justify it.

The journey was relatively smooth, mainly because the almost continuous bombing by the US and British forces forced Qinchuan and his party to travel day and night.

The bombardment by the US and British troops may be considered dangerous to the French people who have been living in peace, but for Qin Chuan and others, it is nothing at all... These bombers will not target civilian houses, because this It's France.

Of course, accidental explosions are inevitable. After all, precision-guided bombs have not yet appeared in this era, and there are so many bombers sent by the United States and Britain, and there are inevitably some rookie pilots among them.

Qin Chuan had seen a row of houses that had been bombed into ruins... The bomber's target was supposed to be a bridge dozens of meters away, but the bombs all hit the houses, but the bridge was not damaged at all.

A group of French people cried and howled from the ruins in an attempt to rescue their relatives, but their efforts were obviously in vain.

Qin Chuan knew that finding a few survivors in such complete destruction would be harder than winning the lottery.

But there are not many such phenomena.

So Qin Chuan and Colonel Slain can safely live in French residences during the day... These residences can be entered and exited by German officers. All you have to do is pick the biggest and best among them, because this means that the owner is richer.

Then knock on its door, and the owner will entertain the "visitor" with all his heart and soul.

This made Qin Chuan feel a little guilty, because Qin Chuan could see the panic on the faces of his masters all the time, and sometimes Qin Chuan could make the masters shiver with just a cough.

Qin Chuan wanted to tell them that it didn't have to be like this. They were just staying for a while to avoid the bombing and would leave at night, but Qin Chuan knew that it would be useless.

Especially at this time... The French also know that the US and British coalition forces are about to attack, so their thoughts will be hesitant, excited and contradictory.

They would guess whether the Americans or the Germans would win the battle, and if the Germans won everything would stay the same, and if the Americans won... what would the Germans do before leaving?

These thoughts will make all French people feel anxious. Sometimes the more you comfort them, the more they will think it is "crocodile tears", so in the end Qin Chuan learned to give up.

Colonel Slain told Qin Chuan a trick: "If you act like you are very busy and tired and treat them like air...then they will feel much better!"

Qin Chuan tried this and found that it was indeed the case.

Therefore, in the next few days, after Qin Chuan moved into a private residence, he often discussed something with Colonel Slaine without restraint, and occasionally laughed, as if the Frenchman busy around him did not exist.

However, this kind of pretense still annoyed Qin Chuan, and they finally arrived in Paris a few days later.

Different from the tense atmosphere Qin Chuan saw along the way, there was no tense atmosphere in Paris at all before the war. People and cars were still coming and going on the streets with lights and entertainment... It was three o'clock in the morning when Qin Chuan and Colonel Slain arrived in Paris. At that time, everything else was dark. This was of course because they had to sleep, but also because some people were worried that if they turned on the lights, they would be targeted by bombers.

Although this kind of worry is unnecessary, people will always do the best.

Paris, on the other hand, was brightly lit at this time. As the jeep passed through the streets, music and laughter would be heard from time to time. Occasionally, dancers inside could be seen dancing in pairs through the windows.

The car stopped in front of a building, which was the German headquarters in Paris. Several guards stood at the door smoking and talking. When they saw Colonel Slain and Qin Chuan getting out of the car, they quickly threw away their cigarettes and stood up. salute.

"Sorry, sir!" A second lieutenant came out from the guard box, saluted the two of them and said, "I need your IDs!"

Colonel Slain and Qin Chuan handed over the certificates.

After the second lieutenant took the certificate, he flipped it open skillfully and compared it with the two of them respectively. Then something strange appeared in his eyes.

"Sorry, colonel, lieutenant colonel!" the second lieutenant said, "I didn't know it was you. It's an honor to see you..."

"Can we go in?" Colonel Slaine asked impatiently.

"Of course!" The second lieutenant replied, "But Marshal Rommel told me to find him in La Roche-Guiron!"

"Marshal Rommel is not here?" Qin Chuan asked.

"Yes!" The second lieutenant replied, "He moved out a few days ago!"

A few days ago, Qin Chuan and others were still on their way here... Although Colonel Slaine brought a radio, he did not receive Rommel's telegram.

"La Roche-Guiron?" Colonel Slaine asked.

"Yes!" The second lieutenant replied, "There is a village 37 kilometers downstream along the Seine, that is La Roche-Guiron!"

Qin Chuan and Colonel Slaine looked at each other, and both knew that this was Rommel's style. He did not like the prosperity of the city, and he preferred the quiet countryside.

But later Qin Chuan and Colonel Slaine learned that the reason why Rommel moved his headquarters out of Paris was not because he liked the quiet countryside, but because he could not find recognition here.

In fact, it is not just “unable to find identity”, it is not an exaggeration to describe it as “being isolated” or “marginalized”.

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