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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).琴涵笑问道：那你告诉我，此事如果是你来做，你该如何抉择啊？琴楠道：孙儿以为，不管是偏向汉还是越，都需要一心一意的，脚踩两天船是很危险的。都什么时候了，你还在油嘴滑舌。范依兰点头道：大王言重了，依兰一定尽力而为。清未民初，一个目不识丁的草莽英雄，大刀王五原为京城镖师，为人仗义，广结天下义士，认识了革命六君子。他为了救康有为，梁启超，不惜深入险境。他最佩服鼓吹革命的谭嗣同，认同他的理想，要革命，必先流血，唯有从容就义。在最后高潮，王五在屋顶被包围，被人开机槍横扫，电光激闪，以死明志。//baidu written examination