統(tǒng)一推進(jìn)系統(tǒng) unified system: 均一制一全線均等收費(fèi)制propulsion system: 推進(jìn)系統(tǒng); 推進(jìn)裝置; 增壓系統(tǒng)a unified accounting system: 統(tǒng)一的會(huì)計(jì)制度dual and unified system: 二重制與單制unified admission system: 統(tǒng)一取錄制度下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯
