Precipitations大气降水precipitationn.仓促；急躁；沉淀；降雨量；坠落；凝结；冰雹precipitation discharge沉淀放电precipitation recharges降水补给precipitation technique沉淀技术precipitation flotation沉淀浮选precipitation attendant沉淀衰减precipitation indicator沉积指示器precipitation equipment沉积装置precipitation buffering沉淀缓冲增菌precipitation inversion降水逆增precipitation rain falln.雨量