The contribution of various weather systems to precipitation varies in different seasons, and the rainfall and the number of rainy days induced by the westerly trough are the greatest.
不同的天气系统在不同季节对降水的贡献有所不同，其中西来槽类的降雨量和降雨日数均居首位，开展人工增雨催化作业机会最多；
youdao