于是得到各种透明系数P_ 2状况下太阳直接辐射通量密度随大气质量变化的平均关系。
Thus the averaged relationships between the flux density of the direct solar radiation and the air mass under various coefficients of transparency P2 were obtained.
涂膜的光谱选择性光热产品应用是用于高太阳能吸收率的优化和低热通量密度。
Spectrally selective coatings for solar-thermal applications are optimised for a high solar absorptance and a low thermal emittance.
证实利用地面水汽压资料可相当精确地计算出各地的可能太阳直接辐射日平均通量密度。
The results show that the daily average flux-density regime can be calculated quite accurately for various parts of the country by making use of the surface vapor pressure data.
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