文章提出了一种新的检测方法即用数字波面干涉仪检测平晶的平行度。
A new laser interferometer method is presented and used to quick measurement of parallelism of optical flat.
文章重点分析干涉条纹的快速调整方法与标准平晶平面度的正确引用方法。
Quick adjusting method of interference fringes and correct quotation method of standard optical flat flatness are analyzed.
讨论了子孔径拼接的基本原理，建立了子孔径拼接模型，确定了进行长平晶拼接测试的基本算法。
The principle was discussed. Testing the model of sub-aperture stitching were established. According to the basic theory of least-squ, a program was designed for it.
我国目前主要仍采用长平晶组分段互检方法作为直线度检定基准，测量精度不高(特别是在测量大尺寸零件时尤为明显)。
At present, long optical flat is still mainly adopted as calibrating benchmark in straightness measurement, whose accuracy is not so high (especially in measuring great-size parts).
为什么在温度变化时雪晶的形状也随着变化，从薄且平的盘状变成长且细的针状，这仍是一个科学之谜。
Why snow crystal shapes change from thin, flat plates to long, slender needles when the temperature changes remains something of a scientific mystery.
另外，薄膜硅技术也被开发出来，将非晶硅或者微晶硅薄膜放到玻璃那样的平的大面积衬底上。
Besides, thin-film silicon technologies have also been developed to place a thin film of amorphous or microcrystalline silicon onto flat large-area substrates such as glass.
研究了DD 8高温合金在平界面及胞晶区的晶粒竞争生长。
The competitive grain growth of DD8 high temperature alloy in planar and cellular interface region has been investigated.
研究了DD 8高温合金在平界面及胞晶区的晶粒竞争生长。
The competitive grain growth of DD8 high temperature alloy in planar and cellular interface region has been investigated.
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