... jet orifice 喷口 jet perforating 聚能射孔 jet transfixion rotation washer 炮眼循环冲洗工具 ...
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conventional jet perforating 常规聚能喷流射孔
An expendable jet perforating gun with large horizontal firing charges.
带有水平点火大射孔弹的消毁式聚能射孔枪。
The law conversation of energy and the hole diameter formula of jet perforating are employed to deduce the relationship of diameter and velocity of jet for cylindrical hole of perforation concrete.
文中根据能量守恒原理及侵彻孔径公式，推导了获得圆柱形穿孔的射流直径与速度的关系。
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