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完钻
 完钻
dril. TD a well
 | 垂直井深
 垂直井深
dril. course vertical depth

to phrases
完钻 wán zuàn
dril. TD a well
完钻: 60 phrases in 8 subjects
Drilling34
Earth sciences2
Electronics1
Engineering geology1
Explosives and Explosive Ordnance Disposal1
General2
Oil / petroleum9
Technology10

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