A set of calculating formulae of original constructional parameters for autocollimatic etsting of convex hyperboloid and paraboloid using a meniscus lens is derived from the third order aberration theory.
根据三级像差理论,推导用弯月透镜检验凸双曲面和凸抛物面的初始结构参数计算公式,讨论设计方法,给出设计实
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
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。
A curved mirror distorts the features.
弯曲的镜面使容貌变形。
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
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。
A gravitational lens is formed when light is bent by a massive object.
引力透镜现象就是光被巨大质量物体弯曲的现象。
a thin curved glass or plastic lens designed to fit over the cornea in order to correct vision or to deliver medication.
与角膜相适合矫正视力或传递药物的薄且弯曲的玻璃或塑料透镜。
The object's gravitational field will bend the starlight like a lens, briefly making the star appear slightly brighter.
它的引力场会像透镜一样弯折光线，使星体暂时变得稍微明亮些。