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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).该剧讲述了明太祖朱元璋第四子朱棣从年少起就喋血沙场，历经战阵，终于成长为合格的军事统帅和成熟政治家，并成就一番伟业的故事。做爹娘的不管教，有你这样当娘的吗？咱乡下人都不像你这样。才出铺子，忽从街上窜进一个十一二岁的少年来，嘴里大喊：香荽妹妹，香荽妹妹。　　简盈越长越大，四兄弟的人生也越来越像模样。为了简盈能够健康地成长，他们一点点改变自己。在爱与责任的牵引下，他们重新着手规划自己的人生，并寻找着属于自己的真正幸福。可是就在这个时候，消息传来，他们不得不面临着简盈因没有合法领养手续，必须与简盈分手的严峻现实……戴天理不知不觉成了统帅一帮的帮主，而在之后的混乱年代里，他更将凭借手中的打狗棍谱写一段热血刚直的英雄传奇……罢了，不过是一群凡夫俗子罢了。