直接日射

1

视场角-直接日射表卫星直播电视接收机

Field of view angle direct broadcasting satellite television receiver
2

法向直接日射辐照度照明辐射的照度通常是以光度为单位。

Normal direct solar irradiance Illuminance of illuminating radiation is always measured in photometric units .
3

测辐射热标准辐照度法向直接日射辐照度

Bolometric standard irradiance normal direct solar irradiance
4

文中还应用我国有关台站多年直接日射的瞬时观测值，计算了β值在我国范围内的分布和各代表点的年变曲线，并对其特点进行了分析和说明。

Using many years ' transient observation data of direct solar radiation available in several stations in China , the distribution of β values and its annual variation curves of the representative stations are evaluated , the features of which are analysed and illustrated .