n. ferrol
misc. ring gasket ; lining ring
论述了焊接凸台衬圈的优点、改装工艺及在产品上的应用。
The advantages of this backing, the concept designed for it, welding procedure and successful use in production are introduced in the paper.
为提高液化石油气钢瓶破裂时的容积变形率，研制了带有凸台结构的焊接衬圈。
In order to increase the volume deformation rate as LPG bottle broken, a boss-backing has been developed for welding the bottles.
埋藏式压力钢管设计中，钢衬、混凝土衬圈和围岩之间普遍存在着不连续的缝隙，致使设计计算时难以进行联合受力分析。
It is difficult to analyze combined work of underground penstock due to the gap among steel lining, concrete lining and rock.
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