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Explosives and Explosive Ordnance Disposal
containing
焦距
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all forms
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in specified order only
Chinese
English
聚能流的
焦距
聚能流在运动过程中,其截面最初缩小,然后扩大。在截面最小处,聚能流的运动速度和能流密度最大。最小截面距装药端面的距离称为聚能流的焦距。在焦距处,聚能流的破坏作用和穿透能力最大
focal length of cumulative shooting flow
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