a convex lens/mirror
凸透镜；凸镜
1.中凸的,凸圆的,凸面的
1.凸状,凸面,凸圆体
1.a convex surface curves outward, rather than being flat or curving inward
1.Take out a piece of A in A letters along the diagonal nail row, by a concave-convex feeling.
拿出一张A在A的字母上顺着斜线用指甲一划，就由凹凸感了。
2.It may be flat, concave, and convex or any one of a great variety of shapes to promote turbulence or help control combustion.
其表面可能为平面、凹面、凸面或任何一种形状，其能促进气缸内涡流运动或有助控制燃烧。
3.A convex lens can be used to concentrate the sun's ray and thus burn a hole in a piece of paper.
凸透镜可以用来聚集太阳光，将一张纸片烧穿一个洞。
4.Some relationships among the support function and indicator function of a convex set and their second-order epi-derivatives are given.
利用集合的表示函数、支撑函数、距离函数和投影等研究闭凸体的典范表示及点到边界的投影特征。
5.Manufacturing cost of a turning operation is a nonlinear convex function of its processing time.
制造成本的一个车削是一种非线性凸函数的处理时间。
6.This setup, known as a conoscope, is shown in Figure 14. 2 and consists of two stress-free plano-convex lenses A and B.
此装置称为锥光镜，如图14.2所示，它由A和B两个无应力平凸透镜组成。
7.The places Passengers can reach are not allowed to have exposed sharp edges, burrs, monoceras and dangerous material, convex knife.
乘客可触及之处检查不允许有外露的锐边、毛刺、尖角和危险凸刀出物。
8.The utility model is characterized in that the middle position of the cover surface is provided with at least one convex part.
其特征在于所述的罩面的中间部位设置至少一个突出部分。
9.The equivalent conditions for a bounded closed convex set-valued mapping to be a perfect additive Set-valued measure are given.
给出了有界闭凸集值映射是完全可加的集值测度的等价条件。
10.A property of quadratic differential convex functions is proven and applications of it are given as well.
证明了二次可微凸函数的一个性质，并给出了这个性质的一个应用。