词典 / 科技
twofold axis of symmetry【数】
暂无补充释义。
duplex【电子】;twofold-gang【电子】
two, twofold,second,duality,double
twofold【数】
twofold
dual character of labo(u)r【劳经】;twofold character of labo(u)r【劳经】
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