X band bistatic Doppler weather radar is a new kind of weather detection radar system. It can detect three dimensional wind vector fields from the echo of rain.
波段双基站多普勒天气雷达系统是一种新型气象探测雷达系统，主要用于测量降雨回波的三维风场。
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Transmission electron microscope and X-ray diffraction were used to study airborne particulates collected in Chongqing, Sichuan Province, which are seriously damaged by acid rain.