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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).Cpu startup!为音乐梦想在城市打拼的李晓武在某天迎来了妹妹李晓雯的探望，与此同时，邂逅了欧吕妙以及任小飞。性格迥异，生活不同的四个年轻人经历了各自的感情冲突，对人生有了新的认识。　在这家绝美度假村工作的年轻人度过了一个难忘的夏天：他们不仅遇到了爱情和真正的友情，还发现了令人心碎的秘密。那就对了。接续着第一季的故事，在舞会结束后的停车场，被棒球袭击的Justin（兰迪•哈里森 Randy Harrison 饰）陷入了昏迷之中。看似正常的Brian（葛尔•哈罗德 Gale Harold 饰）却夜夜守候。最终Justin苏醒了，却不记得那晚发生的事。经过一番波折和努力，Brian让Justin克服了心理障碍，且重新拿起了画笔，自己也和Justin进入到一段全新的关系中。可对伴侣关系抱以不信任态度的Brian在不经意间让Justin伤了心。恰逢这时出现了才华横溢的小提琴家。艺术的共鸣，让Justin渐渐远离了Brian，进入到新的关系中。这一边，告别了David的Michael（哈尔•斯帕克斯 Hal Sparks 饰）不忍受之前工作的同事奚落，开了漫画店，也因此邂逅了大学老师Ben（罗伯特•甘特 Robert Gant 饰）；Ted（斯科特•洛威尔 Scott Lowell 饰）因为上班时看色情影片被逮住，经过低潮期的他因此开办了色情网站；替Ted网站做模特的Emmett（彼得•派格 Peter Paige 饰）因此在网络上爆红，有了许多的支持者，其中不乏大亨……大美青海，绿色中国，认识青海从这里开始，青海的美丽从这里走出——大美青海，美在地域辽阔、山川壮丽，这是青海的形象美；大美青海，美在风俗淳朴、人民可爱，这是青海的人文美；大美青海，美在历史悠久、文化多元，这是青海的内涵美；大美青海，美在地位重要、蓄势勃发，这是青海的发展美。青海卫视大美青海栏目组每天和你如约而至，带您领略青海风光，品味青海魅力，记录青海足音，触摸青海未来。