查询词典 concave lens

On 24 June 1904 the issuing certificate for a new Zeiss trademark was issued; this logo was fashioned with "Carl Zeiss" within in the border of an achromatic doublet lens outline designed by a consultant Erich Kuithan b.

1904年6月24日，蔡司公司的新商标得到了确认。商标图案是一片消色差双合透镜外轮廓线，里面套着&Carl Zeiss&字母，由公司顾问埃瑞克库森（Erich Kuithan，1875年生，卒于1917年）设计。

Achromatic lens?

消色差透镜

The new electromagnetic properties of negative index material such as converse Cerenkov radiation and converse Doppler effect,negative refraction index and perfect lens are analyzed and explained by using basic electromagnetic theory.

从基本的电磁场理论出发，分析和解释负折射物质的电磁特性，以及负折射物质中的逆Cerenlov现象、逆Doppler现象、负折射率和完美透镜的工作原理，帮助人们更加清楚地认识负折射物质的本质特性，更好地开发和应用好负折射物质。

I was so excited to pick up my new lens, the Canon EF 24mm f/1.4L II USM.

我非常兴奋，这可是我的第一颗 L 镜，佳能 EF 24mm f/1.4L II USM。

At this as the title of an article, a montage of Eisenstein and classification methodology, based on different relationships and different levels from simple to complex is divided into five categories:Metrical montage: purely in accordance with the precise length of time editing the lens, which is one of the most easy way to handle this is just a passing Eisenstein

在以此为标题的一篇文章中，爱森斯坦提出了蒙太奇的方法论和分类法，根据不同的关系和不

Expect a 28-300 lens with SSM (typical video range and SSM is silent, which is important for video).

预计28-300镜头沵（典型的视频范围和SSM是沉默，这是非常重要的视频）。

They are provided with red coloured glass and Fresnel lens.

产品带有红色透明玻璃和镜头。

The effects of incident wavelength on diffractive efficiency of Fresnel lens are analyzed.

针对宽带折衍混合光学系统，分析不同入射光波波长对菲涅耳透镜衍射效率的影响。

This article discussed the diamond cutting machining technology, and some Exploration, analysis and discussion are made on machining parameters used in diamond turning process of Fresnel lens and its impact on the element performance.

本文重点阐述了金刚石车削加工技术，并对菲涅尔透镜金刚石车削加工技术中的有关工艺参数及其对工作性能的影响进行了探索、分析和讨论。

Use of the functions of the Pro/ NC machining ,the article discussed the Fresnel lens NC machine process. And automatically generate the processing procedures.

利用Pro／NC的数控加工功能，探讨了新型菲涅尔透镜的数控加工工艺，并自动生成了加工程序。

Surface-coating techniques may be classified into two major types: brittle coatings and photoelastic coatings.

表面涂敷技术分为两个主要类型：脆性涂层和光弹性涂层。

Deepwater production is challenged by well underperformance problems that are hard to diagnose early on and expensive to deal with later.

深水生产正受到初期难以及时诊断且事后处理费用昂贵的油井运行不良问题的挑战。