twiceadv.两倍;两次
twice lining-up二次衬砌
Twice three is six二三得六
twice heat forging二次加热锻造
twice purification二次净化
Twice breaking law二次性违法理论
twice hot pressing二次热压
Twice stem storing二次贮梗
twice-envelopingn.二次包络
twice differential双微分
twice-laid stuff再生材料