two law两点法
twonum.二;两个
two throw crankshaft双弯曲柄
two-stretcher bond井二砌
two bladed propeller双叶螺旋桨
two cavity magnetron双腔磁控管
two-sided approach双面法
two stub transformer双心变压器
two-way green wave双向绿波
Two- way Selection双向选择
two-parameter mean双参数平均
two-scale notation二进制记数法