不垂直度 meaning in English

imperpendicularity
nonperpendicularity

Lack of orthogonality between a suspension(or centering)axis and the spin axis will then result in a drift-producing torque exerted on the gimbal .
悬挂轴和自转轴间的不垂直度将引起产生漂移作用在框架上的力矩。
Door leaves - measurement of dimensions and of defects of squareness
门扇.尺寸和不垂直度的测量
Blocked , scratched , asymmetric clefts , not parallel , not vertical , different axis , etc
模刮痕间隙不均匀不平行度不垂直度不同轴度等不良现象。
Cross - check the main roof truss roof installation quality of the surface is not perpendicular to the vertical center two blocks ; roof surface pressure chord of the roof truss vertical bending side , we must ensure that such errors do not exceed the allowable deviation to ensure roof stability and comply with the design requirements of the state by force
屋架安装质量主要检查屋架跨中对两支座中心竖向面的不垂直度;屋架受压弦杆对屋架竖向面的侧面弯曲,必须保证上述偏差不超过允许偏差,以保证屋架符合设计受力状态及整体稳定要求