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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).　　随着一纸命令的到达，这种短暂的平静很快被打破了。宋轩轩因为在大学的时候做了一个爱情速配软件卖给了一个婚恋网集团，所以生活过的无忧无虑，只不过集团老板李伟霆特别想让宋轩轩过来帮他，还让自己的助手王美佳多次去游说宋轩轩，可轩轩说什么都不干。一个极其平常的夜晚，宋轩轩和好哥们田波波酒后回家，田波波昏睡，但是宋轩轩被雷劈到，从此改变了两个人的整个命运。宋轩轩遇到了月老，月老威胁他想要活着回去，想要找到自己的女朋友就要帮助他完成任务——给天下有情人牵红线牵够99对。从此宋轩轩在田波波的帮助下开始漫长的而且充满着危险的牵线任务当中。/cower蓝弟弟们淘气又聪明，每天都在计划一些或许有趣或许调皮的事情，计划有时成功有时失败，但是并不影响他们每天开心的渡过。——《伤天启》作者：黄月海从天启一出道，我就在关注这个年轻人。