您要查找的是不是：
- concave preset lens 前置凹面镜
- 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。
- Concave on both surfaces;biconcave.Used of a lens. 双面均凹进的；双凹的。用于指透镜
- His figure looks very funny in the concave mirror. 他的样子在凹镜里显得非常可笑。
- This lens can magnify 20 diameter. 这个透镜能放大20倍。
- 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。
- Concave on both surfaces; biconcave. Used of a lens. 双面均凹进的；双凹的。用于指透镜
- Don't smear the lens; I've just polished it. 别把镜头弄脏了，我刚刚擦过。
- preset lens 预调物镜
- Hruby preset lens 赫鲁比前置镜
- He preset the video recorder at the desired time. 他按要求的时间预先把录像机调好。
- The camera lens must be screened from direct sunlight. 照相机的镜头不可受到阳光的直射。
- Hruby's preset lens 赫鲁比(氏)透镜, 赫鲁比(氏)前置镜:与裂隙灯并用以检查眼内部结构
- The preset is actually saved on the far end system. 预置实际上保存在远端系统上。
- 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。
- Support P/T/Z agreement and preset. 支援云台协定、预置位元调用。
