fixed prism造句

例句与造句

1. The OM-1 is an all-mechanical SLR . It has a large viewfinder with interchangeable screens but a fixed prism.
2. Should the angle of the fixed beam striking the fixed prism change, it would reveal that the tower had moved.
3. It's difficult to find fixed prism in a sentence. 用fixed prism造句挺难的