string(234) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%B9%B3%E6%9D%BFCPU%E6%80%A7%E8%83%BD%E5%A4%A9%E6%A2%AF%E5%9B%BE => Failed to connect to 125.88.227.171 port 38114: Connection refused"
平板CPU性能天梯图
