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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).Auburn: longan, mango, litchi, tea, camphorwood, cinnamon …This picture is enough to hit you in the face.立秋没能给予绿叶应有的支持。立秋的娘到死都没见到绿叶替她家传下的“香火”，立秋和绿叶之间的裂痕越来越深了……已故知名电影配乐师约翰·约翰逊执导、蒂尔达·斯文顿旁白的纪录片《Last and First Men》入围今年#柏林电影节#特别展映单元。 影片聚焦铁托时期南斯拉夫多留下的巨大建筑“Spomeniks”，体现了独特而复杂的美学和文化涵义。约翰逊和摄影师Sturla Brandt Grøvlen一起去到当地，在拂晓或黄昏时间，以天空为背景、黑白画面拍摄展现建筑的样子。如果是大船就需要疏浚了。