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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).可是爷爷却以为，此事不可莽撞，因而就打消了结亲的念头。只要连载《独孤求败》，《武侠世界》还不火到爆，这样我把那两千本以一倍的高价卖掉，我就发了。Baidu Encyclopedia, the factory model describes in great detail why factories should be used instead of new. Such problems can be found by oneself. . . . .Those outstanding experts can connect working memory with long-term memory, and can call up a larger capacity of working memory when performing professional activities such as piano and chess that they are familiar with. As Simon and others pointed out in their groundbreaking research report in 1973, chess masters have stored 50,000 to 100,000 chunks about chess games in this hard disk for long-term memory.这是一定。李刀锋的情人杀手刀疤跟李刀锋一起被掳，经过了一番搏斗逃了出来，却因为看到看守的手机上有毕龙杀害李刀锋的信息，误以为杀害刀锋的凶手就是毕龙恼羞成怒开始了刺杀毕龙之路。