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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。
- 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。
- 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 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。
- 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
- concavo concaven. 双凹形
- Concave on both surfaces;biconcave.Used of a lens. 双面均凹进的；双凹的。用于指透镜
- 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。
- This lens can magnify 20 diameter. 这个透镜能放大20倍。
- His figure looks very funny in the concave mirror. 他的样子在凹镜里显得非常可笑。
- An indented or concave surface or area. 凹陷，洼地凹的表面或地区
- Some adjustment of the lens may be necessary. 可能有必要调节一下镜头。
- Do you have soft contact lens care product? 有没有软性隐型眼镜保养用品？
- He uses lens to make things appear clearer. 他用镜片以便看东西更清楚些。
- The lens is often used to make telescopes. 镜片常被用来做成望远镜。
