... direct spot welding双面点焊 direct welding双面点焊 direction of welding焊接方位; 焊接方向 ...
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direct spot welding 双面点焊
direct-welding properties 直焊性能
direct current arc welding 直流电弧焊
direct current welding generator 电焊用直流电机
direct current welding voltage 直流焊接电压
direct current arc welding generator 直流弧焊发电机
Welding direct-current arc 直流电弧焊接
Cross sector seamless line, namely rail bar, rail bar and rail switch direct welding; the vertical force and displacement are direct transmitted between rail bars.
跨区间无缝线路，即轨条与轨条、轨条与道岔直接焊接，轨条之间直接传递纵向力和位移。
The mechanical testing results showed that tensile strengths of samples welded by direct welding is only 31.24% of that of the parent metal, and 50.89% of that by "in-situ" welding.
力学性能试验结果表明，不加填充材料焊接时，试样拉伸强度仅为母材强度的31.24%；进行原位焊接时，试样强度达到母材强度的50.89%。
Modern analytical methods have been used to investigate the patterns of fusion zone and the diffusion behaviors of elements by tig direct welding and tig with Sn as transition layer welding.
利用现代分析测试手段分别研究了TIG焊直接焊接镁铝和镀锡焊接镁铝的焊缝熔合区形貌，并对其进行了元素扩散行为的分析及比较。
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