以基礎(chǔ)油清掃base oil: 原油。 sweep: vt. (swept ) 1.掃(房間等)，掃除，打掃； ...contracted time-base sweep: 收縮時(shí)基掃描delayed time-base sweep: 延遲時(shí)基掃描expanded time-base sweep: 時(shí)基線展寬下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯
