two all二平
twonum.二;两个
two elastic cylinders两弹性圆柱体
two-tier government两级政府
two beam interference双光束干涉
two-diameter piston双级活塞
two-certificate aim双证书教育
two-column accounts两栏账簿
two point perspective两点透视
two-wire connection双线绕组
two-photon resonant双光子共振
two - phase solvent双液相溶剂