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垂直井 chuízhíjǐng
archit. riser
dril. vertical well
eng.geol. vertical shaft
oil perpendicular hole; vertical hole
坝内的垂直井 chuízhíjǐng
tech. riser
垂 直 井
: 38 phrases in 6 subjects
Drilling6
Electronics1
Engineering geology3
Geophysics10
Oil / petroleum14
Technology4

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