focal power

• 倒焦距,屈光本领

focal power的用法和样例：

例句

1. Determine the focal length of your lens.
   决定你镜头的焦距。
2. As a result, the focal lengths in these planes will be different.
   结果，这两个平面内的焦距将不同。
3. The lensometer is the instrument of choice for evaluating optical power.
   焦度计是用于测定透镜顶焦度的仪器。
4. An athermal space system can be designed by a way of abberation correction upon condition of fixed power of the components.
   再在保持光焦度不变条件下进行像差平衡。