optic axes造句

• There are two methods to obtain composite achromatic wave - plate . one is to combine with identical material , in this case we select the thickness of each plate and determine the angle of their optic axes
  复合消色差波片的设计主要摘要第2页采用以下两种方法，一种是利用同种材料组合，根据工作波段来选取各片的厚度，设计光轴之间的夹角。