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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).六名青少年男女参加努布拉岛边境的冒险营，当恐龙在岛上引发浩劫，大伙必须团结一心，力图幸免于难一场渗透经济领域的打击东北黑帮的闪电行动！　　时间是永不回头的箭，当他们开始怀疑自己的时候，会否后悔当初来到是上海的决定呢？这里，真的是天堂吗？面容憔悴的文静（梅婷饰）是一名终日奔波、黑白颠倒的娱乐记者，她奔波于各种各样的聚会，应付脾气秉性各异的受访者，劳累不堪，疲于奔命。在这个有如染缸、物欲横流的娱乐圈中，文静没有选择沉沦与屈从，依旧真诚地期盼一份纯真爱情的到来。此前，她曾有过两段失败并且刻骨铭心的恋情，直到小白（宋宁饰）的到来，才为她封闭的内心世界吹进一股清新的微风。两人的恋情至纯至真，波澜不惊，但是纯美从来不容于世，它总要经受现实残酷无情的碾压。小白憧憬着光明的前程，文静则面对美国投资公司总监李文卿（潘石屹饰）的追求，他们各自在理想和现实中徘徊不定……两代人的观念分歧，在怪物的世界中也不例外……　　什么是坏人，有标准答案吗？ 」