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to phrases
接箍 jiēgū
geol. coupling
oil box coupling; collar
tech. scarf box
口语接箍 jiēgū
dril. knot
接箍
: 255 phrases in 12 subjects
Architecture1
Compressors2
Drilling40
Earth sciences2
Engineering geology4
General1
Geophysics25
Mechanics15
Metallurgy17
Mining1
Oil / petroleum88
Technology59