n.垂直,直立;垂直度;
例句:
This paper analysis NC machine tool perpendicularity error.
文章分析数控机床垂直度误差.
Exact perpendicularity between the components must be maintained.
各分量之间必须严格地保持互相垂直.
In installing the steel column, how many mm . Are the deviation range of elevation and perpendicularity?
钢柱安装, 标高和垂直度偏差范围是多少?