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The principle is to try to use synthesis/aggregation first instead of inheritance.Fencing#c show_style();。At the right time, use the right tools to carry out reasonable attacks.9. River RedundancyOne 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).该故事以香港地产界风云变幻、龙蛇沉浮的大背景为依托，讲述了一段新千年前夜几个世家父子，两代袅雄的恩仇纠葛，突出表现了亲如兄弟的三个男人叶荣添、马志强、许文彪和三个年轻女子田宁、岑颖欣、霍希贤这六个时代男女追求美梦成真、实现宏图大愿以及为情恋、为事业、为朋友、为家族，演绎的一场爱恨交织的人生悲喜剧。故事伊始，从小情同手足的三兄弟发誓要开拓梦想的将来，在香港地产界创造属于自己的世界。他们坚信这不是在做梦，只要兄弟同心，精诚合作，就一定会成功。