string(247) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=ad14%E5%8E%9F%E7%90%86%E5%9B%BE%E7%94%9F%E6%88%90pcb%E7%9A%84%E9%97%AE%E9%A2%98 => Failed to connect to 101.89.117.144 port 38056: Connection refused"
ad14原理图生成pcb的问题
