人类眼睛所观测到的光是以流明小时这种单位度量的。
The light perceived by the human eye is measured in units called lumen-hours.
海拔：你的观测地点的海拔高度，单位是米。
Height: the altitude of your observing site above the mean sea-level, in meters.
地面自动站a文件是以站月为单位的气象观测综合资料，具有要素多、信息量大的特点。
National Basic Automatic Weather Station (AWS) data of A-format is a kind of integrated observation data, which includes kinds of elements and generous information.
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