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- Just as a double convex lens enlarges, so a double concave lens reduces. 正象双凸透镜可以放大那样，双凹透镜也可以缩小。
- convex concave lens 凸凹透镜
- Just as a double convex lens enlarges,so a double concave lens reduces. 正象双凸透镜可以放大那样，双凹透镜也可以缩小。
- The surfaces of the concave lens may be proportioned so as to aberrate exactly equal to the convex lens. 凹透镜的表面可以进行均匀处理，以便使像差完全与凸透镜一致。
- A concave lens causes rays to diverge as though they are coming from a focal point. 发散透镜使光线分开,就好象从焦点上发出来的那样。
- The characteristic of the contact action is deeply investigated, and with an exemple of convex concave joints in one pontoon bridge, two kinds of contact finite element model are established. 深入考察接触行为的特点,并以舟桥纵向连接件丙丁接头为例,建立了两种接触计算模型。
- Just as a double convex lens enlarges, so a double concave lens reduces 正象双凸透镜可以放大那样，双凹透镜也可以缩小。
- Function's convex concave and inflection point 曲线的凹凸与拐点
- Effects of concave lens on eyes of guinea pig 凹透镜对豚鼠眼生长及屈光发展的影响
- massager,massagist,concave lens,dent,dented,dirge， 按摩师;凹透镜;凹陷;凹面;哀乐，安眠药，案板
- A METHOD IN DETERMINING THE FOCAL LENGTH OF A CONCAVE LENS 一种测量凹透镜焦距的方法
- A Method for Measuring the Focal Length of Thin Concave Lens 一种测量薄凹透镜焦距的新方法
- A METHOD OF MEASURING PRECISELY THE RADIAL OF A CONCAVE LENS 一种较精确测量凹透镜球面半径的方法
- Measuring the focal length of concave lens using collimator 利用准直管法测凹透镜的焦距
- Concave on one side and convex on the other. 一面凹进一面凸起的
- Convex on one side and concave on the other. 凸凹的一面凸一面凹的
- A convex lens is used to concentrate rays of light. 凸透镜用于聚集光线。
- To the excellent concave and convex carving skill. 碑上的阴阳刻。
- Fault: Convex or concave muzzles. 缺陷：突起或凹入的口部。
- This lens can magnify 20 diameter. 这个透镜能放大20倍。
