If they were on when the couplers were welded and machined, then the side bars will move from the heat as soon as I break the bars off.
如果焊接和加工连接器时，这些横栏在连接器上的话，那么一旦我将横栏取掉，侧栏就会因为热量而掉落。
Study on the leak rate of fluid in welded pipes in leak-before-break analysis;
介绍了输气管道泄漏率的大孔模型和管道模型的特点及求解方程。
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