介绍了干线输气管道热连接分支管道的设计计算方法。
The method of design and calculation on in-line welding branch pipeline for gas transmission trunk line is introduced.
将你的主要分支连接到中间图片，并将你的第二级和第三级分支连接到第一级和第二级，以此类推。
Connect your main branches to the central picture and connect your second-and-third-level branches to the first and second levels, etc.
如果你把这些分支连接起来，你就会更容易理解和记忆。
If you connect the branches, you will understand and remember a lot more easily.
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