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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).Create your own exclusive collectionAfter reading these, I really feel that ghosts are not terrible, but people are the most terrible.天有不测风云，一只可爱的吉娃娃被人类宰杀，险些遭人食之，后被狐族女王灵千幻（刘一祯饰）救出，带回狐宫，夜犬（陈威翰饰）效忠于狐族，是狐族九姐妹的大哥哥，却也对小公主九妹情有独钟，处处保护有加，总在九妹最危险的时候挺身而出，说他是痴情情圣也不为过。可是命运总是难以捉摸，默默守候的骑士终不抵一见钟情的王子，真心真爱的夜犬因为种种原因与九妹擦肩而过，后知道九妹爱的人竟是刘四喜，自己对九妹的爱便再也藏不住了，他渐渐开始迷失，与刘四喜大打出手，想要赢回九妹对自己的爱。Here are two ways to enter DFU mode:　　《木府风云》讲述了明代云南纳西木氏土司在当地统治时期，木氏家族内部腥风血雨的争权夺势和权力更迭的的恩怨情仇。秋瓷炫在剧中饰演木府家族的女当家人也是血刃仇敌阿勒秋，她身负家仇潜伏木家二十年，心机城府极重，却褪不去天生的善良纯真。与木家嫡孙木增相爱不能相约殉情，却在最后一刻悬崖勒马救人性命。经历重重磨难嫁给爱人木增后忍辱负重与各色势力人物斡旋暗斗，带领木家突围困境，最终获得信任和尊重，化解仇恨成为木府当家女主人，书写了一段传奇女子的情仇爱恨故事。Creates an object from its specific subclass. Q: How can it be realized? Answer: To create abstract classes derived from factories, that is, specific factories create specific products. Since products are to be created, product abstract classes and specific product classes are naturally needed.