This paper introduces the size, seam form, moulding technology, the clamp part's selection, use and installation of super_high molecular weight polythene abrasion resistant lining board.
介绍超高分子量聚乙烯耐磨衬板的尺寸，砌缝的形式，成型工艺，紧固件的选用及其使用与安装。
Size is expected to start from the calculation, cutting, straight seam welding, the whole round, press-fit, girth welding, leak detection, have a certain degree of technical difficulty.
从下料展开尺寸的计算、裁剪、直缝焊接、整圆、压装、环缝焊接、检漏等都有一定的技术难度。
This article discusses how to prevent and lessen welding distortion during welding producing from many aspect such as welding seam length and size, welding form, welding surface size, welding method.
论述在焊接生产中，如何防止和减少焊接变形，并在焊缝长短、焊缝大小、焊接形式、焊接面大小、焊接方法方面加以探索。
These studies have evident theoretical significance to decrease coal pillar size and enhance recovery ratio, and practical importance to solve the problems of irregular seam mining in our country.
本文研究对减小煤柱尺寸，提高房柱式采煤回采率具有明显的理论指导意义，对解决我国生产矿区面临的不规则区段煤层开采问题具有实际意义。
Both wet and dry underwater welding operations are presented to repair the burst at the welding seam of large size crossing steel pipe.
介绍了大口径过河钢管接口焊缝爆漏现象，以及湿法和干法水下焊接修复技术。
The results reveal that the grain size of welding seam decreases with the increase of welding velocity and the rate of tubes' extension increases under the same technological conditions.
经对试验结果分析表明：在其它工艺参数不变的情况下，随着焊接速度的增加，焊缝组织的晶粒度减小。铜管的扩口率增加。
The results reveal that the grain size of welding seam decreases with the increase of welding velocity and the rate of tubes' extension increases under the same technological conditions.
经对试验结果分析表明：在其它工艺参数不变的情况下，随着焊接速度的增加，焊缝组织的晶粒度减小。铜管的扩口率增加。
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