string(226) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=ad%E4%B8%AD%E5%8E%9F%E7%90%86%E5%9B%BE%E7%94%9F%E6%88%90pcb => Failed to connect to 101.91.112.32 port 38195: Connection refused"
ad中原理图生成pcb
