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to phrases
双牙轮钻头
shuāngyálún zuàntóu
dril.
double cone bit
;
two-roller bit
eng.geol.
double-cone bit
oil
twin-cone bit
;
two-cone bit
双牙轮钻头
:
3 phrases
in 3 subjects
Mechanics
1
Oil / petroleum
1
Technology
1
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