By doing so, air or fumes will not be trapped between the diaphragm and sealing weir. 只有这样做，气体或烟气才不会滞留在隔膜和密封装置之间。
The article discusses the calculation of mechanical properties of welded metal-bellows applied in mechanical seal devices. 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。
