题目 nc文件中lon的范围是0-360 我只会两种方法 方法1： {lon|(/350,352.5,355,357.5,0,2.5,5,7.5,10,12.5,15,17.5,20/)} beginf = addfile("D:/cygwin/home/wunan/hgt.day.mean.200001-200004.nc","r")hgt = f->hgthgtF = sho