twoholeadj.双孔的twonum.二；两个two inboard ehain of AFC刮板运输机双中链two-degrees of freedom二自由度two-handed interaction双手交互two-men optical system双人光学瞄准系统two dimensional compound二维化合物two weeks at the seaside在海滨的两个星期two-core shielded cord二心屏蔽塞绳two-dimension bar code二维条码two-cup edging machine双压盖磨边机Two time scales approach分离时间尺度法