string(241) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=cad%E5%9B%BE%E7%BA%B8%E6%80%8E%E4%B9%88%E7%BC%A9%E5%B0%8F%E5%86%85%E5%AD%98 => Failed to connect to 14.18.117.71 port 38041: Connection refused"
cad图纸怎么缩小内存
