1)  dark light,obacure rays
暗光
2)  obscure conditions
昏暗光线
1.
To analyse the color image of driver s face taken by CCD camera under obscure conditions,the image noise jamming is eliminated first by erosion in combination with dilation operation,and the threshold processing is used for the grey level differences in the image to select preliminarily the threshold value of grey level.
该方法可以在昏暗光线下,定位人脸区域,有效去除干扰。
3)  dark light zone
暗光区
1.
According to the demands of crop and livestock for sunlight illumination condition,4 zones,namely,dark light zone,weak light zone,moderate light zone and strong light zone were divided.
参照农业生物生长发育与太阳光照条件的关系,并根据试验资料,把太阳光照条件划分为暗光区、弱光区、中光区和强光区4级,其光照度分别为≤7×102,7×102~2×104,2×104~5×104,>5×104lx。
4)  Light-shade adaptation
暗光适应
5)  dark beam
暗光束
1.
To contract the circular beam symmetrically, the co-propagation of the bright and dark beams in three-dimensional self-defocusing media is studied systematically.
为了获得一种对称压缩圆光束的方法,系统研究了三维自散焦介质中亮暗光束对的共同传输。
6)  Dark Fiber
暗光纤
参考词条
补充资料：暗光化学
分子式：
CAS号：

性质： 激发态反应并非由于吸收电磁辐射所致，而由化学作用或酶促作用产生的激发态发生的光化学过程。此术语已建议不再使用。

说明：补充资料仅用于学习参考，请勿用于其它任何用途。