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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).丈夫逐渐失忆的高竹，需要在过往中找到面对现实的勇气；英武帝沉吟了一会，才道：此事容后再议。The fighting situation at position 149 to be talked about next is many different from that at positions 169 and 142 mentioned earlier, because for the first time there is a "flying unit" among the "living biological weapons" appearing at position 149.蒂姆（布兰顿·思怀兹 Brenton Thwaites 饰）和凯丽（凯伦·吉兰 Karen Gillan 饰）背负着灰暗而又沉重的过去，眼睁睁地看着父母在面前悲惨地死去，这成为了兄妹两人记忆中无法痊愈的伤痕。时间飞快地流逝着，然而伤痛却没有因此而淡去，在此期间，蒂姆和凯丽一直都没有放弃过寻求真相的机会。终于，功夫不负有心人，两人发现，一切惨剧的始作俑者就藏在家中的古董镜子之中。为了终结悲剧，蒂姆和凯丽返回老家想要将镜子摧毁，令两人没有想到的是，他们的举动却在无意之间成为了打开地狱大门的钥匙。鲜血、恐惧、愤怒、悲哀，在排山倒海而来的回忆之中，他们开始搞不清楚，究竟什么是虚幻，什么是现实。　　“联荣号”迎着朝阳，在澳门内港升起鲜艳的五星国旗，带着澳门人民对新中国的热爱，驶向祖国怀抱。