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oil duct
agric.	油道 (ductus oleiferus)
auto.	润滑油道路，槽
el.	油管道; 油管［沟］
oil	油沟
tech.	油沟〔路〕; 输油管
wind.	油路; 油道; 润滑油道; 油导管

oil duct : 5 phrases in 4 subjects

Automobiles	2
Compressors	1
Scientific	1
Technology	1