您要查找的是不是：
- 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。
- 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
- vertical downward welding 向下立焊
- downward welding in the vertical position 向下立焊
- Researched and designed a new type of spiral feed device, which feeds as vertical downward. 摘要研究并设计了一种新型的垂直向下式螺旋喂料器。
- Obviously the force of gravity Mg is acting vertically downward. 显然重力的Mg作用垂直向下。
- Read horizontally to flow rate curve and vertically downward to flow rate gpm. 读出水平线上的流量曲线和垂直线下方的的流量（加仑/分钟）。
- It starts from rest and falls vertically downward with uniform acceleration. 它从静止开始以匀加速度竖直下落。
- Effects of superficial gas/liquid velocities and water volume fraction on the frictional pressure drop of three-phase flow in vertical downward pipe (40 mm i. d. ) are experimentally investigated. 对垂直下降钢管内油气水三相流动的摩擦压降受折算液速、折算气速和油水混合物中含水率的影响进行了试验研究。
- downward welding in the inclined position 下坡焊
- 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
- She laid the picture face downward on the table. 她把那幅画正面朝下放在桌上。
- The vertical line meets the horizontal one here. 垂直线与水平线在此相交。
- The margin of a bunker extends vertically downwards, but not upwards. 沙坑的界线垂直向下延伸，但不向上延伸。
- 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
- A downward vertical stroke in handwriting. 倒竖书法中自上而下的一竖
- 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
- 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。
