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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).她看着李敬文瘪嘴，也顾不上装贤良温柔唤回他的心了，满脑子都是离家的恐慌和无措。在英国与西班牙的战争中，女王展现出的强大魄力，把大不列颠推向霸主的辉煌巅峰。三十岁左右，漂亮大方，精明能干的齐之芳失去了丈夫，一个人带着三个年幼的孩子，肚子里还有一个遗腹子，怀着极大的委屈伤心，忍受着被众人怜悯的屈辱，她倔强地维持着尊严和体面，坚强地活着。她不允许孩子们向外人伸手，教育他们宁可饿着也不求援。总是有男人欣赏这样独立自主，美丽孤傲的女人，肖虎、戴世亮、李茂才，他们以各自的方式对她表达着爱意。齐之芳爱上戴世亮，感激李茂才，最后倾心于肖虎，然而因为种种原因，她总是与他们擦肩而过。家庭、爱情、尊严，直至暮年的齐之芳最终得到了属于自己的那份幸福。在文化街派出所管区，文艺团体林立，商贾小贩云集，各类批发市场众多，昔日高雅去处的文化街现在成了鱼龙混杂的闹市，独特的地理位置，使这个地区的治安状况日超复杂。This chapter talks about the third and fourth categories.白果绕着那个大火桶转了两圈，啧啧赞叹了两声，又问晚上睡觉冷怎么办。