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to phrases
toothed bit
dril. 牙轮钻头
tech. 带齿钻头
tooth bit
dril. 钢齿牙轮钻头
oil 铳齿牙轮钻头
toothed bit: 23 phrases in 6 subjects
Drilling4
Engineering geology2
General1
Mechanics2
Oil / petroleum9
Technology5