凸焊螺母
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projection welding nut
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The status of design and technological experiment of projection welding seal nut joint is introduced in detail.
详细介绍了凸焊密封螺母接头的设计和工艺试验情况。
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The experimental results show that the technology of nut circular projection welding is superior to that of arc welding.
试验结果表明，螺母环形凸焊工艺优于电弧焊工艺。
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