bullet perforation

常见例句

双语例句

• Based in these, barrier thickness criteria for both YD-89 bullet conventional perforation and limited entry fracture treatment completion methods are suggested.
  在此基础上提出了YD-89弹普通射孔和限流法压裂两种完井方式条件下的隔层厚度标准。
• The main part of the technique is the complex perforator, which is consisted of a small long-radial ratio and large perforation diameter bullet and a front chamber filled with san.
  其核心部件是复合射孔器，由小长径比大孔径射孔弹和装有防砂材料和助推火药的前仓组成。
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