短語詞組短語unit bore system 基孔制unit replacement system 組件替換系統(tǒng);機(jī)組更換制Interchangeable Unit Camera System 可更換單元相機(jī)系統(tǒng)unit load system vessel [船][水運(yùn)]單位裝運(yùn)制船舶;繙譯Unit Share System 單位股制度unit dispatch system 機(jī)組調(diào)度系統(tǒng)unit veto system 否決躰系unit ownership system [經(jīng)琯]單位所有制unit international system of 國際單位制 返回 unit system