perpendicularity laminar垂直层流
perpendicularity tolerance垂直度公差
perpendicularity control垂直度控制
perpendicularity test正交实验
Perpendicularity Recording垂直式磁头
perpendicularity hoof直立行走
Perpendicularity Move垂直移动
perpendicularity degree垂直度
同义词:orthogonalityorthogonal opposition