concave curvature

This paper presents an approach for interference locating of the center of curvature or vertex of a sphero-concave surface by laser interferometry.

本文就激光球面干涉测量中凹球面干涉定位问题进行了探讨。

Non-standard Design for Concave Curvature Radius of Belt Conveyor

带式输送机凹弧段曲率半径的非标设计

The paper describes a high resolution, high accuracy and simple method of measuring dymamic angle by means of optical self-collimating of concave mirror curvature center.

用四球面反射镜曲率中心光学自准方法，通过测量自准像位移来计算弯沉角，是一种高分辨率、准确、简单地测量方法。

Having greater curvature on the concave side than on the convex side . Used of a lens.

凹凸的凹面曲率大于凸面曲率的.

Meanwhile, a concave reflector with suitable curvature radius and large section radius improves the levitation capabilities of the potential well near the reflector under mode 4.

另外，采用适当曲率半径和较大截面半径的凹球面反射端能够提高模式4下靠近反射面的一个悬浮位置的悬浮性能。