去安装和实验在相同的计算机上，我们不需要互联网连接。
To install and experiment on the same computer, we don't need Internet connection.
我们不需要任何网络连接到安装微型和小型企业。
如果通径尺寸过大，连接部的安装和密封十分困难。
Path size, if too large, the junction is very difficult to install and seal.
如果通径尺寸过大，连接部的安装和密封十分困难。
Path size, if too large, the junction is very difficult to install and seal.
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