The features and the corrosion stability of common stainless steel for PTA devices were introduced, and as was the material development.
介绍了PTA装置中常用不锈钢材料的特点和耐腐蚀性能,以及用材进展情况。
The scan mirror is an very important part of a space remote sensor. This paper discusses the material development and the manufacture method of the big lightened scan mirrors.
扫描镜是光机扫描型空间遥感器的重要组成元件。文章针对目前空间遥感器上应用的大口径轻量化扫描镜,从材料和制作方法方面进行了一定的技术研究。
In the development of Western technology, it has been non-verbal thinking, by and large, that has fixed the outlines and filled in the details of our material surroundings.
在西方科技的发展中,非语言思维大体上固定了我们物质环境的轮廓,并填充了细节。
There is considerable evidence for different forms of innate knowledge and innate desires and we'll look--and we'll talk about it in detail when we look at case studies like language learning, the development of sexual preference, the developing understanding of material objects.
大量不同形式的证据,证明了先天知识和先天欲望的存在,当我们讲到语言学习,性偏好发展,以及物质客体理解的发展,等主题的个案研究时,会来细讲这些证据。
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