指标差(IE) 望远镜中水平线成一直线时, 检查指标臂上箭头所指刻划, 若在0o 之外, 称”在弧外”(off the arc),IE 以负号(-) 表示, 若在0o 之内, 称”在弧内”(on the arc),IE 以正号(+) 表示.
基于1个网页-相关网页
缸体的实际型线是双弧外摆线的等距曲线，并由此导出其数学表达式。
The actual cylinder shaped conductor is isometric curve of double arc outside cycloid and its mathematic expression was deduced.
该书大部分都是关于他们实际存在一些的问题—外扩的线条，垂曲弧，穹型拱顶。
Much of the book is about their practical problems-thrust lines, the catenary curve and groin vaulting.
对某发电厂大型鼓风机转子轮盘强度进行了有限元计算与分析，确认了转子轮盘在出现沿叶片外弧的弧形沟槽后，略加修复仍可安全使用。
This text made FEM calculation and analysis for rotor disk of heavy blower in a plant, and found that the disk can be reused safely again after the arc grooves along outside of blade being repaired.
应用推荐