片语
uni-directional brake单向制动器
Uni-directional Repeatability单向重复性
uni-directional extrapolation顺向外展
Uni- directional单向的
Uni-directional GAP单向网闸
uni-directional line单向运行线路
UD Uni-Directional Tape单向带
monodirectional单向的
uni-directional converter单向变换器
uni-directional valve单向阀