In the past few days, the tanks of the US army have shown their might, and the soldiers on the Japanese front line are also very clear about the power of these tanks, and in the face of the attack of these tanks, they have almost no way to deal with them. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 ｉｎｆｏ

What they didn't know was that above the rear positions, there were anti-aircraft machine guns, which were being aimed at these tanks, which were more feasible than bazookas.

The U.S. troops did not realize this at all, they rushed towards the Japanese positions surrounded by infantry, and had now compressed Juno's positions to within a range of 7 kilometers, which in the eyes of the U.S. troops was already within range, and it seemed that they could rush through with just one charge, but they did not know that at this moment, they were about to face the greatest crisis.

The time of the attack of the US army is slightly different, the anti-aircraft machine gun is not in the firing range, and the shot at this moment cannot kill the enemy to a large extent, although it is said that in a condescending situation, Even if it is a 12.7 mm anti-aircraft machine gun, his range is above 5 kilometers, the anti-aircraft machine gun must at least hit 2000 meters above, throwing out the gravitational acceleration, such an anti-aircraft machine gun square flat fire, the firing range is doubled, basically, you can hit the tank, but if you want to concentrate on the key points, this possibility is not very likely, in the other party did not realize that the Chinese anti-aircraft machine gun, can threaten the tank under the premise, the anti-aircraft machine gun troops, patiently waiting for one after another US tanks into the firing range.

The tanks are gradually approaching, and even the artillery fire in the rear is still carrying out covering attacks on the Japanese positions, and the raging artillery fire seems to change the color of the heavens and the earth.

The combination of tanks and infantry, to a certain extent, shows a different power, even if this exchange ratio increases several times, it will allow the U.S. Army to successfully take Juno, and quietly, Japan has become the biggest enemy of the U.S. Army.

In the US tank camp, Tom is a tanker, he has been in Alaska for more than 4 months, from the previous bloody war, he was lucky to survive, in the constant attrition of the war, Tom was not in greater danger, in this sense, he was very lucky, but in this battle, he could not be spared, he was the first to rush to the forefront of the Japanese position, ready to set up meritorious service, but did not know, a very dangerous weapon for tanks, is aiming at it.

Under the escort of the infantry, the tank is moving forward slowly, under the rocket launcher and simple anti-tank weapons, which is invulnerable, the area of the infantry against the tank is within 50 meters, the rocket launcher is within the range of 200 meters, and the tank is 200 meters away, as long as the tank notices the underground trench, it is a pity that they don't know, a brand new anti-tank weapon, is aiming at them, under the anti-aircraft machine gun, these are all targets, the rate of fire of the anti-aircraft machine gun, basically, so that the tank has no way to hide, The firing range is even higher than 5 kilometers, at least within the range of 5 kilometers, the tanks cannot withstand the armor-piercing ability of the anti-aircraft machine guns, as long as the anti-aircraft machine guns start to attack, they are finished.

12.7 mm anti-aircraft machine gun, in which the armor-piercing projectile is placed, which is even in later generations, in such a small caliber of bullets to install armor-piercing shells, it is also very difficult, the larger the shell, the easier the armor-piercing projectile, of course, the kind of naval gun, under the premise of too large, it is more difficult, the naval gun has to deal with, more is a battleship or a fixed land defense, the armor-piercing capacity is much larger than ordinary shells, in this case, the armor-piercing of the naval gun also needs to be carefully scrutinized, the steel core used, It is not simple, the steel core of ordinary strength, it must be on the basis of the steel core of ordinary strength, increase the hardness and penetration, so as to be able to deal with fixed targets and turrets.

The armor-piercing shell of the anti-aircraft machine gun, compared with the large-caliber naval gun, is easier, the real 12.7 mm anti-aircraft machine gun, it is really not easy to produce armor-piercing shells, ordinary steel cores, can not achieve a certain small degree, the strength is not good, it will cause the weakening of armor-piercing ability, really small to a certain extent, this armor-piercing bullet, and the use of armor-piercing bullets is not much different.

Even in later generations, the 12.7 mm anti-aircraft projectile is extremely strong, and the armor-piercing bullet is a difficult point, and the general country solves it with more than 40 mm, but China solves it, the reason is very simple, China has the existence of an all-in-one machine, in terms of materials, in some subtle places, has surpassed this era, and even surpassed later generations.

If other science and technology, must be basic, only enough foundation and analysis of science and technology, can be involved in that area, the lack of basic technology, it is almost impossible to access that area, but the material is an exception, the material, itself is between chance and necessity, gradually born of things, many things, sometimes just a coincidence, even some cutting-edge materials in the 21st century, may not be able to be produced in the 20th century, although the cost of materials is much higher than other technologies, However, by chance, it was decided that at the beginning of the 20th century, the production of materials could be completed.

For example, Bailang Duoxi, a dye born in the 18th century, no one knows, he will be the predecessor of sulfonamide, although his effective ingredient is only a metabolite of Bailang Duoxin in the human body, but he has an effect, this kind of antibiotic, as early as the 19th century, or even earlier in the 18th century, has appeared in front of people, but people do not realize his role, and even in the 21st century, some very common materials, maybe there are other uses, It's just that people don't realize it.

The synthesis effect of the all-in-one machine also has the analysis effect, so that many things can appear for complete use, and even some things that have appeared before, in a specific environment, there are also unique effects, in this case, these things have been successfully used in all aspects of China, and the same is true for armor-piercing bullets, Yang Yuanzhao insists on the research of materials every day, 10,000 materials a day, most of which are waste materials, which cannot be applied to China's production, but every three or five or seven days, there will also be a material that can be usedIn a few years, the materials that China has have surpassed those of later generations.

A simple armor-piercing projectile, just a steel core, 20 mm or less shells, is made of H35 steel, which appears in the universal selection of the all-in-one machine, after the identification of the all-in-one machine, is currently based on the steel varieties, the highest hardness, corrosion resistance and heat resistance of a material, its strength is several times that of ordinary steel, the degree of hardness and high temperature resistance is very high, widely used in China's weapons, and some civilian facilities.

Because it is steel with a certain compound, as long as you find his formula, it is not difficult to synthesize, only used in a furnace of steel, add a part of the additives, after clearly knowing his formula, China has studied the production method for this kind of steel, his price, because of the relationship between many cherished additives, is a little higher than the general steel, but it is still in the acceptable range.

However, when applied to weapons, especially armor-piercing bullets, the performance of this steel has increased the performance of China's armor-piercing bullets by more than 3 times, hardness and heat resistance, making this steel the standard configuration of armor-piercing bullets.

However, the scanning function of the all-in-one machine, but you can easily see the basic properties of these materials, this H35 steel, in Yang Yuanzhao's memory, compared with the steel of later generations, even slightly exceeded, it can be said that it is the most suitable for making armor-piercing bullets, Yang Yuanzhao in later generations, just a team of engineers, and did not get involved in the military field, I don't know what the strongest armor-piercing bullets are in later generations, as far as the current world is concerned, H35 steel, should be the strongest steel, and even general methods can not be processed.

Fortunately, there is an all-in-one machine, not only shows his excellent performance, but also shows some of his weaknesses, such a steel, as long as the synthesis is successful, it will be formed at one time, the hardness is above the ordinary diamond, the degree of high temperature resistance, directly catches up with tungsten alloy, once this alloy is manufactured, it is difficult to process, this is his weakness, if there is no all-in-one machine, he may become an excellent alloy born by chance, can not be applied to weapons.

However, the all-in-one machine has thoroughly shown his performance, he not only has a strong hardness and temperature performance, in specific circumstances, it can be processed with the help of unique properties, the biggest weakness of this alloy is at low temperatures, when it is below minus 30 degrees, his hardness will be weakened, almost weakened to the level of ordinary steel, that is, the temperature is reduced to this extent, it can be processed.

Although it is said that China has a high-strength alloy of powder smelting, but the hardness index of this alloy is only one degree higher than the steel of this armor-piercing bullet, and this alloy can be reluctantly processed, but the loss is huge, and the performance of low temperature makes this metal have a convenient processing method, and the strength of ordinary metal is reached at low temperature, that is, it can be processed with general tools, although it is said that under the premise of maintaining low temperature, the cost is greater than that of general processing, but it is much better than the top cutting tool. Although China's industrial production capacity is very strong, the production of these tools is not a problem, but China's industry is complicated, this top tool, can be applied to many aspects.

Even if China's material science has topped the whole world, but the top knives, especially the knives produced by powder smelting, his production, or relying on the all-in-one machine, China's industrial production is complicated, even if the all-in-one machine is upgraded to the current level, the daily production is also full, rather than consuming a large number of knives, it is better to produce at low temperature, which is not very difficult to hit for China's science and technology.

With the help of the unique characteristics of H35, the strength of the weakened characteristics at low temperatures, it is processed at low temperatures, and the steel core of the armor-piercing bullet is obtained, although the processing difficulty is relatively large, and it is not something that ordinary factories can process, so that his price is three times higher than that of ordinary armor-piercing bullets, but such weapons, armor-piercing performance, compared with traditional armor-piercing bullets, has increased several times, in anti-tank weapons, this is already a huge breakthrough, China has produced a lot of them, Because of this plan, it was also transported to Alaska.

Some of the armor-piercing shells are transported by transport ships, and most of the rest are transported by transport planes, and at present, each anti-aircraft machine gun has at least more than 5,000 armor-piercing shells, which is fatal for US tanks.

The tanks of the U.S. army have not yet realized that the armor-piercing force in this era, to put it bluntly, is only to resist ordinary machine gun fire, the huge battery above, the thickest place, his thickness is only about 4 cm, that is, 40 mm, 4 cm, does not mean that the protective strength is 40, because this is ordinary cast iron, at most the surface is strengthened a little bit, but the strength is limited, and the reason why machine gun bullets cannot be dealt with lies in his thickness, However, the 12.7 mm machine gun itself has an armor-piercing capacity of more than 25, and with the addition of armor-piercing shells, it has tripled to 75 mm, that is, nothing can stop him.

At a distance of 3 kilometers, the subtleties are no longer clear, but the gunners who can participate in this battle are all elite, and the aiming of the anti-aircraft machine guns is relatively simple, and they basically directly aim at the weakest link of the tank, the fuel tank.

This is the biggest weakness of the US tank, the fuel tank is actually the same as a motor vehicle, it is exposed on the outside, although there is a layer of iron sheet as a shield, but this iron plate is at most 10 mm thick, in order to ensure that the location of the fuel tank is not discovered, not protection, after all, such a huge fuel tank, it is impossible to do a good job of comprehensive protection.

But this, how can it be possible to block armor-piercing shells, even if it is 3 kilometers away, but China has carefully dissected at least 50 tanks, and the location of the fuel tank is basically fixed, so this area is also separately received out and becomes the target of their attack, and all the anti-aircraft machine guns are aimed there.

Finally, when the last tank entered the firing range, in the position of all the anti-aircraft guns, the command sounded, faint two words, shooting, this sentence was transmitted to each gunner through the walkie-talkie, the gunner who had been waiting for a long time, clenched the anti-aircraft machine gun in his hand, had already aimed at the other side, as long as he pulled the trigger, he could kill the opponent's tank. (To be continued.) )