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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).　　《越狱 Prison Break》及《殖民地 Colony》主演Sarah Wayne Callies饰演Robin，身兼妇产科医生﹑母亲﹑继母多个角色，孩子岁数范围由7至21岁，而且她本人还怀孕中。其余演员包括Clive Stan...现在确实明明白白的发觉到了异样，如果说这样的鼓声是心理战也就有道理的，可是这样一来闽越军也得不到的休息，同样不利于白天的攻城。杨舟点开了《佛本是道》的最新章节。鲁邦的女儿第二季鲁邦的女儿第二季鲁邦的女儿第二季鲁邦的女儿第二季来人……慢。