direct breakage

常见例句

雙語例句

• The drill bit is a direct tool for rock breakage. The rate of penetration is closely related with the drill bit as well as the mechanical properties of the rocks.
  鑽頭是直接破碎井底巖石的工具，鑽井速度的快慢不僅與鑽頭有關，而且與所鑽巖石的力學性質密切相關。
  lib.swpu.edu.cn
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