使用波纹管机械密封的的成本太高，可是使用寿命长于前两种，维护或者改换时斗劲麻烦。
Use bellows mechanical seal the cost is too high, but the service life is longer than the first two, maintain or change relatively trouble.
焊接金属波纹管机械密封主要用于炼油厂热油泵的轴封。
The welded metal bellows mechanical seal is largely used for the axial seal of hot oil pump in refinery.
本文主要讨论应用于 机械密封 装置中的焊接金属波纹管力学性能的 计算。
The article discusses the calculation of mechanical properties of welded metal-bellows applied in mechanical seal devices.
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