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阐述了金属反射镜的设计，包括反射镜材料的选择，反射镜结构的选择，分析了影响金属反射镜面型精度的因素。
The design of metallic mirrors which including materials selecting and structure designing as well as factors of influencing surface for metallic mirrors are discussed.
为提高型钢尤其是复杂断面型钢连轧时机架间张力的控制精度，研究了一种智能化微张力控制系统。
A kind of intelligence micro-tension control system has been studied to especially improve the control precision of tension between stands for complicated section continuous rolling.
在野外运用相位测量剖面术(PMP)测量物体三维面型时，环境光场经常发生变化，从而严重影响测量精度。
The accuracy of phase - measuring profilometry (PMP) is greatly influenced by the environmental light, especially in the outside of the room.
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