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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).Number of episodes: 70 episodes　　虽然是监狱，但是这里罪犯却在里面组成了一个小社会。监狱的老大是科西嘉人凯撒·卢希尼。他让刚刚进来的马里克去完成一些令人发指的“任务”，否则他们就会杀死马里克。稚嫩的马里克在这个过程中渐渐变得强悍，他成为了卢希尼的左右手。当他成为监狱里的老大的时候，他便开始带领罪犯向监狱的不人道的种族和等级制度发起反抗——而这一切，都是马里克为了施行自己秘密计划的必经之路。林聪诧异极了，慌忙将青鸾往身后一推。现在嬴诗曼提起来的时候，他心里面可以说是在滴血。Macro commands: d, df, f, d, df, f3(1) Having obtained the first-class qualification for more than two years, and having no record of illegal practice within two years prior to the date of application;