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1)  rate changes of rainfall attenuation
降雨衰减变化速率
2)  rain attenuation
降雨衰减
1.
Using the ITU-R rain attenuation forecasting model,and based on the rainfall data and the geographic location parameters of main cities in our country,the isograms of rain attenuation distribution for the communication satellite with the orbital location 92° E in Ka band(30/20GHz)was presentd.
利用ITU-R给出的降雨衰减预测模型,根据我国主要城市的分钟降雨率数据,计算出我国Ka波段(30/20GHz),轨道位置为92°E的卫星通信系统在线极化波情况下的降雨衰减等值线分布,此结果可作为Ka波段卫星通信系统设计的理论依据。
2.
In order to keep the transmission quality of satellite communication,and based on the analysis of rain data of China,picture of rain attenuation contours can be calculated.
降雨衰减是影响Ka波段卫星通信系统传输质量及系统性能的主要因素之一。
3)  rate of decay
衰变速率,衰减速度,衰减率;衰减速率
4)  attenuation due to rain (rain attenuation)
降雨衰减(雨衰)
5)  rain specific attenuation
雨衰减率
1.
A new model is developed for the computation of rain specific attenuation from rain volume reflectivity,for frequencies from 1 GHz to 100 GHz,and the radar equation,maximum range and signal-to-noise ratio and signal-to-clutter ratio in rain have also been analyzed herein.
文中拟合得到了由降雨的雷达体反射率反演雨衰减率的公式,适用频率1~100 GHz,并且给出了降雨存在时的雷达方程、最大作用距离以及雷达接收信号信噪比与信杂比的变化。
6)  decay rate
衰减速率
1.
Experimental determination of the decay rate of nitrifying bacteria:AOB and NOB;
硝化细菌AOB与NOB衰减速率实验测定
2.
677)×10-10 cm3·s-1 for low-energy Ar2+ with Ar and the zero-argon-pressure ion decay rate of our fit result was 0.
677)×10-10cm3·s-1及其零氩气压强下的离子衰减速率为0。
补充资料:贺李观察祷河神降雨
【诗文】:
质明斋祭北风微,驺驭千群拥庙扉。玉帛才敷云淡淡,
笙镛未撤雨霏霏。路边五稼添膏长,河上双旌带湿归。
若出敬亭山下作,何人敢和谢玄晖。



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【出处】:
全唐诗:卷269_32
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