string(217) "get document error:https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=dwg%E5%9C%A8cad%E4%B8%AD%E6%89%93%E4%B8%8D%E5%BC%80 => Failed to connect to 14.18.117.71 port 38220: Connection refused" dwg在cad中打不开

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dwg在cad中打不开