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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).得此一人，人生何憾？吕馨扑上前，紧紧抱住陈启，愿此生再也不分离。两到四岁的娃儿实在太小，就算农家娃子皮实，划得也不慢，还是不能跟先一拨比。不想……徐风赶紧解释，然后不安地咽了口唾沫。该剧讲述了与独子相依为命的单亲妈妈颜宋（王丽坤饰）与刚从沉睡中醒来的失忆男子秦漠（刘恺威饰）相遇相守的爱情故事，而在看似纯美的爱情之后，一个扑朔迷离又虐心十足的惊天秘密也随之曝光。这段由“一次失忆”引发的“两生之花”，在不同的命运与爱情遭遇中，剧中人物该何去何从，凄美的爱情之后又隐藏了怎样的阴谋.刑满释放人员张浩误打误撞与文物巨盗黑龙互换身份，在警察董政的配合和指导下，张浩与犯罪分子斗智斗勇，经历了一系列啼笑皆非的对抗之后，最终警民配合破获一起惊天文物倒卖案件。