天文学上常用的光度单位，以太阳单位时间平均辐射总能量来表征。其它天体的光度常以太阳光度为单位来表征。
... solar local radio source ==> 太阳局部射电源 solar longitude ==> 太阳经度,日面经度 solar luminosity ==> 太阳光度 ...
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当前我们对太阳光度的认知是：在地球的历史进程上，太阳光度应该是逐渐增加而不是减少的。
Our present understanding of the Sun's luminosity holds that it should have progressively increased, not decreased, over the course of Earth's history.
该仪器与一台美国NASA主持的国际气溶胶观测网仪器CIMEL CE-318太阳光度计进行对比观测，二者所得结果一致性较好。
A sun photometer CIMEL CE-318 in AERONET (owned by US NASA/GSFC) was operated under same conditions to compare with MORSAS. The observed results are consistent very well each other.
约在三米水深(约10英尺)，大约百分之六十的总光度(太阳光或月光)，几乎所有的红色光会被吸收。
At about three meters (about 10 feet), roughly 60 percent of the total light (sunlight or moonlight) and almost all the red light will be absorbed.
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