“物镜”造句

望远镜的物镜必须精确置于中心上.
The object glass of a telescope must be accurately centred.

此物镜仅产生很小的散射光.
This objective produces only very little scattered light.

由单透镜组成的物镜可作目视和照相观测用.
Objectives which consist only of one lens can be used for visual and photographic observations.

• #物镜