concave and convex

基本解释

Last, studies the influence of different curvature on the film cooling effectiveness of concave and convex surfaces.
同时，研究了曲面曲率的变化对气膜冷却效率的影响。
In the past, it was very hard to change the shape of the permanent magnet torque characteristic and describe its concave and convex extent.
以往对如何改变永磁力矩特性曲线的形状及如何描述其凹凸程度一直是继电器设计人员难以解决的问题。
Objective: To observe the effect of concave and convex on growing and the refractive developing of guinea pig eyes and to establish lens-induced animal model of myopia or hyperopia.
目的：观察凹透镜和凸透镜对豚鼠眼球生长和屈光变化的影响，建立透镜诱导型屈光不正动物模型。