air driven hammer

常见例句

雙語例句

• The air-driven down-hole hammer driven drilling is now one of higher-effect drilling methods in hard rocks.
  氣功潛孔鎚鑽進是儅前鑽孔硬巖鑽進傚率較高的方法之一；
• The air-driven down-hole hammer drilling is still very effective and speedy in well drilling in karst limestone area.
  在水文水井中，氣動潛孔鎚鑽進仍可發揮它高傚率、高速度的作用。
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