短語詞組短語oil outlet duct 排油管槽oil l duct 油道vertical oil -duct 縱向油道horizontal oil -duct 橫向油道Oil -duct of core 鐵芯油道connecting rod oil duct 連桿油道complex oil duct 復雜油道cargo oil duct 貨油管道hot oil duct 熱油導管 返回 oil duct