1) deviation of plumb line
铅垂线偏斜
2) plumb
铅垂
1.
As an optical instrument,plumb aligner is used to give a plumb line,but up to now there is no accurate concept to indicate its plumbness.
对垂准仪校准过程中同轴度和一测回垂准测量标准偏差进行了分析,并提出了铅垂p角的概念。
3) plumbing arrangement
铅垂布置
4) perpendicular distance
铅垂距
1.
It can gain the perpendicular distance of chord and band course,consequently improving the precision of laneway’s forming and examing its quality conveniently.
用这种方法可求出弦腰线上任一点距竖曲线巷道底板的铅垂距离 ,从而提高巷道成形精度并方便质量检
5) vertical section
铅垂井段
1.
Based on the elastic theory of large deflection and by taking into account the variation of the axial force and its effects on bending deformation of the drillstring in vertical section,the vibration of the drillstring induced by fluctuating weight on bit is described by a parametrically excited system.
基于弹性大变形理论 ,考虑到轴力沿钻柱轴线的变化及其对钻柱弯曲变形的影响等因素 ,将受自重作用的铅垂井段钻柱在波动钻压激励下的振动转化为一个参数激励系统 ,用 Galerkin方法首次得到了描述此系统的 Mathieu方程 ,并通过将方程的解展成富里叶级数的方法 ,得到了该振动系统的动力分岔值曲线及其所包围的动力不稳定区。
6) vertical base-line
铅垂基线
参考词条
补充资料：铅垂线
1.把铅锤或其他重锤悬挂于细线上﹐使它自由下垂﹐沿下垂方向的直线叫做"铅垂线"。铅垂线水平面相垂直。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。