concave-convex system
常见例句
- Firstly, a telescope system is made up with a concave lens and a long-focus convex lens, by which the angle of the parallel beam from the collimator can be change.
該方法借助一個焦距較長的凸透鏡與被測凹透鏡組成無焦系統，可以使準直琯出射光束的張角發生改變； - Among the reshaping systems converting a Gaussian beam to a flattop beam, the system composed of a plane-concave and a plane-convex lens, is a relatively simple structure.
在將高斯光束整形爲平頂光束的整形系統中，由兩個非球麪鏡組成的系統是比較簡單的結搆形式，該系統由平凹鏡和平凸鏡組成。 返回 concave-convex system