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hammer plugger bit; percussion drill; chisel bit; chopping bit; thrust drill | |||
churn drilling | |||
impact drill | |||
churn drill; percussion borer; shotdrill | |||
anvil type percussion drill; reciprocating drill | |||
cable drilling; churn drilling (探); hammer eye (头); jupper bit (头); percussion drill (机); percussion drilling; push drill; shot bit; shot drill (机) | |||
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hammer drill | |||
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punch boring |
冲击钻: 436 phrases in 22 subjects |