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perforation of hollow carrier gun
expl.
有枪身射孔
如果用金属套管将爆炸元件,如导爆索、射孔弹封闭,那么这种枪就叫做有枪身射孔枪,否则,称为无枪身射孔枪。采用有枪身枪的射孔作业称为有枪身射孔
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