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One last thing on this subject, The 7.62 mm traced armour-piercing firebombs fired by the 81-1 family, Although the name is a little long, But compared with ordinary munitions, The difference is still well understood: Tracing and burning are simple, Is to add two corresponding drugs, The armor piercing is to replace the steel core behind the bullet's brass back armor (also known as bullet head) with a harder tungsten alloy core with stronger penetration to hard targets. The latter is also the tail-stabilized shelling penetrator used on the third generation of modern main battle tanks (abbreviation: APFSDS) is one of the two main materials (the other is the notorious, highly radioactive depleted uranium penetrator core, The user country is mainly the United States, while China mainly uses tungsten alloy penetrators, Less pollution and better performance, The United States does not need to. First, the United States does not pass the standard of tungsten treatment technology. Far from the level of our country, Secondly, the United States is a tungsten-poor country. It also wants to fully use tungsten alloy bombs, But it can't be used, But as a nuclear Power, There is a lot of depleted uranium as nuclear waste, so depleted uranium is selected as a substitute. As for tungsten alloy and depleted uranium, after putting aside the key additional condition of radioactive pollution, the pure question of who is better in armour-piercing performance is not directly related to this article, so it will not be described in detail).那个，我和陈启现在到底算什么关系？吕馨不由想到。凭着超高的人气，《寻秦记》的相关版权自然也炙手可热起来，几乎被炒成一个天价，不过陈启并没有打算卖。把他抱到膝盖上坐好，紧紧搂在怀里，心里有种冲动，想跟这个四弟说说自己的心事，这件连板栗也不知道的心事。本来以为武侠已死，有事烧纸。1968年,在冷战时期的葡萄牙,一名享有特权的自由欧洲电台工程师兴风作浪,格洛里亚德里巴泰霍充斥着间谍,谎言和秘密。