Computation model of spectral radiation luminance of clear atmosphere background
无云地球大气背景辐射光谱亮度的计算模型
Those spectra nearer the periphery of the objective are dimmer than those to the central spot.
靠近边缘的光谱状亮点的亮度要小于靠近中心的亮点。
spectral density
谱线[频谱，光谱]密度
Control Light. Adjust light levels up or down.
操控光亮：使周围的亮度变亮或变暗。
photometer head with equality of brightness
等亮度棱镜的光度头
(of light) lacking in intensity or brightness; dim or feeble.
（灯光）缺少亮度或光亮；黯淡的或微弱的。
The AXD series is a group of high-brightness point light sources having a continuous spectrum similar to that of the sunlight .
短弧氙灯:该产品是一种高亮度的点光源，具有像阳光一样的连续光谱。
They could look at the spectra of the light the moons reflected.
他们可以观察月亮反射的光的光谱。
They can look at the spectra of the light the moon reflect
他们可以观察月亮反射的光的光谱
These clouds show spectra remarkably similar to those of the illuminating star.
这些云的光谱与照射它的亮星的光谱极其相似。
When viewed using a bright lamp, the beams of light can be seen as spectra of colors.
在明亮的聚光灯光源下，光束会还原为光谱色彩。
spectral radiation exitance
光谱辐（射）出（射）度
screen(a lamp,light,etc)to reduce its brightness
遮挡（灯、光等）以减弱亮度
spectro-photoelectrical sensitivity curve
光谱光电灵敏度曲线
high sensitive laser spectroscopy
高灵敏度激光光谱学
Spectrophotometric determination of cobalt in bright nickel plating bath
分光光度法测定光亮镀镍溶液中的钴
Artificial light in an intensely bright and broad beam.
泛光高亮度和宽度的人工光
The intensity of light per unit area of its source.
亮度每单位发光区的光的强度