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for subject
Drilling
containing
洗清
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all forms
Chinese
English
喷气清洗
air flush
清洗
washout
清洗井底
bottom scavenging
清洗井底
bottom hole scavenging
清洗井底
bottom hole cleaning
清洗井底的钻头
clean-out bit
清洗泥浆池
cleaning to pits
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