The source, influence and control of the impurity dements in samarium are described in this paper.
本文在实验的基础上论述了钐中杂质的来源，影响及控制方法。
Bulk optical polishing and segmenting manufacture method which is usually used for parallel plane dements, is not suited for micro-wedge mirrors.
微楔形镜的加工不能像平行平面元件那样，采用大块抛光，切片分割的办法。
Optical structure dements of optical lens have great similarity, so the our requirement of software on efficiently drawing optical structure element with computer was caused.
由于光学镜头的结构件与机械零件具有很大程度的相似性，所以引发了运用计算机绘制光学结构件的软件的需求。
Optical structure dements of optical lens have great similarity, so the our requirement of software on efficiently drawing optical structure element with computer was caused.
由于光学镜头的结构件与机械零件具有很大程度的相似性，所以引发了运用计算机绘制光学结构件的软件的需求。
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