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产生聚能效应的原因
带锥孔的圆柱形药柱爆炸后,当爆轰波前进到了锥体部分,其爆轰产物则沿着锥孔内表面垂直的方向飞出。由于飞岀速度相等、药形对称,爆轰产物要聚集在轴线上,汇集成一股速度和压力都很高的气流,称为聚能流。它具有极高的速度、密度、压力和能量密度。爆轰产物的能量集中在靶板的较小面积上,便能产生聚能效应
expl.
reason for cumulative effect
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