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双根 shuānggēn
dril. double
earth.sc. doubled
钻杆双根 shuānggēn
dril. double joint; double-jointing pipe
双根两根钻杆组成的立根 shuānggēn
dril. couplet
由两根钻杆组成的双根 shuānggēn
tech. couplet
双根
: 26 phrases in 11 subjects
Agriculture1
Aviation1
China1
Commerce1
Drilling5
Economy3
Electronics1
General5
Oil / petroleum6
Technology1
Water resources1