對(duì)稱量綱制 symmetric system: 對(duì)稱系統(tǒng)symmetric closed system: 對(duì)稱封閉系統(tǒng)symmetric cryptography system: 對(duì)稱式加解密系統(tǒng)symmetric operating system: 同步操作系統(tǒng)dimension limit system: 公差制度下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯
