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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).现在正宗师傅回来了，你就好好地跟林兄弟学吧。火攻？蒲俊嘴角浮现出一丝特别的笑容，说道：医术有言，以毒攻毒，今日我们便以火制火吧。Thank you for sharing 111111111故事讲述一个迫降的外星人哈利(图代克饰)在接受了自己科罗拉多小镇医生的新身份后，本带着秘密使命来到地球的他，最终提出了人生中的重大课题：人类值得拯救吗？以及为什么他们在吃披萨之前要折叠？小国和奈美是一对关系要好的姐妹，然而父母正在闹离婚，同时她们所上的小学也面临着废校的危机。为了留下美好的回忆有同学提议组队参加舞蹈大赛，妹妹奈美跃跃欲试，而姐姐小国却提不起兴致，奈美苦于得不到姐姐的支持，此时随着转学生风香的到来，事情似乎有了转机。: 2017 Internet Weekly