ust unit symbol time部件: component; unit; parts; asse ...符號(hào): character; sign; symbol; mar ...時(shí)間: time; hour單元常數(shù)象征時(shí)間，部件符號(hào)時(shí)間: ust unit symbol time部件符號(hào): symbolic unit下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯
