本文所介绍的几种聚能药包的设计是以多次试验的总结资料为依据的。
The designs of some shaped charges described in this paper have been made on the basis of the data in several tests.
本次实践根据聚能药包原理，采用不同尺寸的线性聚能药包。对不同厚度的铜块体进行切割。
The present cutting practice was based on the principle of energy-concentrated charge, using linear-shaped charges of different sizes to cut copper blocks with different thickness.
水下定向爆破可以通过减少抛掷方向的介质密度、形成定向坑，利用定向聚能药包及延期爆破等方法实现。
Underwater directional blasting can be achieved through the methods of reduced density of medium in thrown direction, formed directional pit, directional comulative blasting, delayed blasting etc.
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