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机械钻速 jīxiè zuān sù
dril. rate of penetration
oil penetration rate; penetration speed
tech. bit penetration; cutting speed
机械钻速米/小时 jīxiè zuān sù
dril. rate of penetration; m/hr
机械钻速: 11 phrases in 5 subjects
Drilling5
Earth sciences1
Oil / petroleum2
Technology2
Textile industry1

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