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- downward welding in the inclined position 下坡焊
- downward welding in the vertical position 向下立焊
- The downward welding technology with cellulose welding rode 使用纤维素焊条的下向焊接技术
- Application of Downward Welding in NG Pipeline Construction 下向焊焊接工艺在天然气管道建设中的应用
- Application of Downward Welding Technique for Urban Natural Gas Pipe Network 下向焊技术在城市天然气管网中的运用
- Application of downward welding procedure in Xiao-Yonglong-distance pipeline 向下焊在萧-甬长输管线焊接中的应用
- She laid the picture face downward on the table. 她把那幅画正面朝下放在桌上。
- In this paper, the improvement of vertical down welding in piping is introduced and the technology of mixed vertical downwards welding and co - operated vertical down welding are described . 介绍了手工向下焊焊接工艺在长输管道焊接方面的发展,主要叙述了混合型向下焊焊接工艺和复合型向下焊焊接工艺的应用。
- A downward tendency, as in the price of a stock. 下降趋势如股票价格等的下降趋势
- Prices started a downward plunge. 价格开始猛跌。
- He looked downward to avoid my eyes. 他低著头看,以避开我的目光。
- A downward incline or passage; a slope. 斜面，斜坡向下的斜面; 倾斜面
- Some metals weld better than others. 有些金属容易焊，有的不容易焊。
- Projecting downward; overhanging. 向下突出的; 悬伸在外的
- Application and Equipment's Feature of"Downward Welding"Technology Being Used in Pipe Welding “下向焊”工艺方法在管道焊接中的应用及设备特点
- The molten lava got into every nook and cranny on its downward path. 熔岩向下流动时，无缝不钻，无孔不入。
- Application of pipe downward welding technology in the city natural gas pipe net 管道下向焊技术在城市天然气管网中的运用
- On reaching welding heat, the metal surfaces are pressed together. 当金属表面达到焊接热度时就会压在一起。
- On the Technique of Downward Welding for Pipe and the Features of Welding Machine 管道下向焊技术及焊机特点
- Several Problems in Development of High Cellulose Electrode Used For Vertical Downward Welding 高纤维素型全位置立向下焊条研制中的几个问题
