英语词汇“downhole drill”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	downhole drill
释义	downhole drill downhole drill [′dau̇n‚hōl ′dril] (mining engineering) A hammer or percussive drill in which a reciprocating pneumatic piston is located immediately behind the drill bit and can follow and enter the bit down the hole, for minimizing energy losses.
随便看	put on notice put on (one's) dancing shoes put on one's dancing shoes put on (one's) face put on one's face put on one side put on (one's) thinking cap put on one's thinking cap put on one's thinking cap, to put on our dancing shoes put on our faces on put on our thinking cap put on our thinking caps put on paper put on production put on record put ons put-ons put on sackcloth and ashes put on the acid put on the back burner put on the block put on the brakes put on the carpet put on the clamps

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