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油沟 yóugōu
chem. oil passageway
compr. oil gallery; oil groove
mech.eng. oil groove (道)
oil oil duct
tech. oiling groove
油沟〔路〕 yóugōu
tech. oil duct
油沟
: 11 phrases in 5 subjects
Animal husbandry1
Automobiles1
Ecology3
Electric machinery1
Technology5