moon-shaped lens

meniscus (shaped) lens

凹凸透镜，弯月形透镜

meniscus astrograph

弯月形透镜天体摄影仪

meniscus photoheliograph

弯月形透镜太阳摄影仪

Shaped like a biconvex lens.

双凸透镜状的形状像双凸透镜的

aberration of the concave mirror is reduced by a meniscus lens.

用半月板镜头减少凹透镜的过失。

gas permeable lens

ph.1. 透气隐形眼镜

The curvature of the film is concentric with the mirror behind the meniscus.

胶片的曲率是和弯月透镜后面的反射镜同心的。

wagon-box rivet head

扁头形[透镜形]大直径铆钉头

A lens is a round piece of glass, but it is not flat.

透镜是一个圆形玻璃片，但不是平的。

These sandstone bodies form elongate lenses.

这些砂岩体形成伸长的透镜体。

Measurement of optical surface and foci of long focal length lens by CGH

计算全息法测量长焦透镜面形和焦距

Guarantee Measure of Symmetry Degree when Processing the Square Lens Parts

加工方形透镜零件时对称度保证措施

compound lens or lens system designed to be free of astigmatism and able to form approximately point images.

没有散光并且能够形成近似的图像的透镜或透镜系统。

Incorporating HIGH DEFINITION OPTICS?( HDO?) technology, lens geometry comes in five interchangeable lens shapes.

合并的高定义OPTICS?(DO?技术,透镜几何进来五互换性的透镜形状。

The lens or lens system in a microscope or other optical instrument that first receives light rays from the object and forms the image.

物镜首先从物体上接收光线并形成影像的显微镜或其它光学仪器中的透镜或透镜系统

Objective: An objective is a system of one or more pieces of lenses grouped together. It refracts light and can form an image. Alternatively known as Lens.

镜头:镜头是一片或多片透镜的组合。它折射光线而形成影像。

a concave lens [mirror]

凹透镜 [凹面镜]

The Reflection of the Self-image--To Analyze the Images of Others in Jinghuayuan;

自我形象的映照——《镜花缘》中的“他者”形象透视