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　　气焰如此猖獗，警方极为震惊，线索中断，案情无法进展，对方又固若金汤，稍有不慎，便会鱼死网破，公安部及海阳市公安局唯有决定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).一桩强暴案件震惊了整个德里，副警务处长瓦尔迪卡·查图尔维迪展开对凶犯的艰苦搜寻。改编自 2012 年印度黑公交轮奸案。The creepage distance is divided into two grades, and the creepage distance of 300V grade is ≥ 5 mm; Creepage distance of 600V grade ≥ 7mm. The creepage distance is designed for 220V voltage according to 300V grade, and the creepage distance is designed for 380V voltage according to 600V grade. For 220V and 380V high-power parts, character marks are applied to allow cuts in PCB design to meet the requirements of creepage distance.Comparison of True and False Details把木塞拔开，水就放出去了，不用倒水的。洞外已经烧红了半边天，人喊马嘶、呼喝叫喊之声远远传来，间杂着马蹄声往来杂沓，让人不由自主地跟着精神紧张。