在对热力系统建模并进行热力计算时，需要对模型中的设备和管道编号。
For modeling and thermal calculating of the thermal system, it is necessary to numbering related equipment and pipelines in the model.
这些编号与实际管道尺寸的关系有点奇异。
The relationship of these Numbers to the actual pipe dimensions is a bit strange.
这些编号与实际管道尺寸的关系有点奇异。
The relationship of these Numbers to the actual pipe dimensions is a bit strange.
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