two pln.对讲电话线twonum.二；两个two level maser二能级微波激射器,双能级脉泽Two layer model双层模型two lanes canal双船道运河two way contact双向触点two speed drive双速驱动two-piece set两构件支架two press zones双压区双网挤浆机two level cache二级缓存two-part mold两箱铸型two-color bat两面不同颜色的球拍