oil shale retort [化學]油頁巖干餾爐oil shale residue [機械工程]油頁巖灰渣oil shale recovery [土木建筑工程]油頁巖開采oil shale n. [油氣] 油頁巖oil sesame [經(jīng)濟學]麻油oil separator [車輛][油氣][機] 油分離器；[車輛][油氣][機] 油氣分離器oil separation 油分離oil seepage 油漏，油滲漏oil seed oil seal ring 油封環(huán)oil seal retainer [交通運輸工程]護油圈油封護圈oil seal [機] 油封oil scrubber [經(jīng)濟學]油洗滌器oil scraping ring [機械工程]刮油環(huán)oil scraper ring 刮油圈；[機] 刮油環(huán)oil scraper piston ring [經(jīng)濟學]刮油活塞環(huán)oil save-all [交通運輸工程]防止濺油裝備oil saponification value [數(shù)學]油皂化值oil sand [礦物] 油砂oil rub resistance [材料科學]抗油污