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.
一种在纬编针织机上进行具有一定厚度的，表层衬经衬纬结构的成圈型纬编间隔织物织造方法。
The present invention is the weaving process of stitching weft-knitted alternative fabric with surface warp inserting and weft inserting structure of certain thickness in a weft knitting machine.
一种在纬编针织机上进行具有一定厚度的，表层衬经衬纬结构的成圈型纬编间隔织物织造方法。
The present invention is the weaving process of stitching weft-knitted alternative fabric with surface warp inserting and weft inserting structure of certain thickness in a weft knitting machine.
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