string(319) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%A3%8E%E5%8A%9B%E5%8F%91%E7%94%B5%E6%9C%BA%E4%B8%80%E5%9C%88%E5%87%A0%E5%BA%A6%E7%94%B5%E8%BD%AC%E4%B8%80%E5%9C%88%E5%A4%9A%E5%B0%91%E6%97%B6%E9%97%B4 => Failed to connect to 14.18.117.71 port 38220: Connection refused"
风力发电机一圈几度电转一圈多少时间
