http://www.open3d.org/docs/release/getting_started.html
解决pip._vendor.urllib3.exceptions.ReadTimeoutError: HTTPSConnectionPool(host=‘files.pythonhosted.org‘, port=443): Read timed out.
https://yq.aliyun.com/articles/619208
https://blog.csdn.net/beta_safe/article/details/81514442
原文：https://www.cnblogs.com/stptstpsai/p/11454860.html