在某点处的曲线的法线上,在凹的一侧取一点O,点O到曲线上该点的距离等于此处的曲率半径r,使以O为圆心,r为曲率半径作圆,这个圆叫做曲线在点处的曲率圆,曲率圆的圆心叫做曲线在点处的曲率中心。
二次曲线曲率中心的轨迹方程_电子资料文库 关键词:曲率 曲率圆 曲率中心 轨迹方程 [gap=462]Key words: curvature; curvature circle; center of curvature; trochoid equation
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如果你在曲率中心用目镜观察,你将会看到严重的慧差。
If you were using an eyepiece in the center of curvature you will then observe serious coma.
然后将重复曲率中心测试并与第一测试进行比较以确保反射镜保持对准。
Then the Center of Curvature test will be repeated and compared to the first test to ensure that the mirrors remain aligned.
工程师确保镜子在第一曲率中心测试完美对齐后,发射环境测试将随之而来。
After engineers make sure that the mirrors are perfectly aligned in the first Center of Curvature test, the launch environmental tests will follow.
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