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Author: WikiMatrix
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English[en]
For example, to increase penetrative power, a large and specially hardened steel plug had to be precisely machined and mated to a recess in the nose of the bomb.
Chinese[zh]
例如:為增加貫穿力,一个巨大的特别坚硬的钢栓必须用精密制造的方法加工,并与弹头上的一个凹坑紧密配合。