英德
有道
百度
谷歌
图片
维基
百科
平面镜 [píng miàn jìng]
flat mirror
- 为减小不利的衍射效应，副镜，或平面镜的大小只是刚够把主镜在焦平面的像反射就行了。
To minimize harmful diffraction effects, the secondary, or diagonal, mirror is generally only large enough to let the central portion of the focal plane receive light from the whole primary mirror. - 利用最小二乘法求解一组过定线性方程组，求得被检平面镜的面形误差，拟合出被检平面面形。
A linear equation set can be solved by means of least square method, thus the form errors of the flat mirror under test can be obtained and the form of the flat mirror can be fitted. - 给出了一种能够在一维方向或二维方向精确确定物体位移和转动的光学纤维传感器.从一个大直径多模光纤中发射出的光,入射到一个由平凸透镜和平面镜组成的系统的曲面上，光经反射后，被小直径的多模光纤收集，经处理后确定物体的位移和转动.两者的分辩率分别达到微米量级和百分之一度.
In tis paper an optical fiber based sensor is presented which can enable the accurate determination of tilt and displacement in one or two planes.Light from a large core multi-mode fiber is launched onto the curved surface of plano-side-silvered plano-convex lens.The reflected light is recovered by small core multi-mode fibers and serves as the means for determining the displacenient of tilt.Their resolution can be micron and 0.01 degree respectively.
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中国词汇量第二的英语词典
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