焊前预热

  • 网络weld preheating

焊前预热焊前预热

焊前预热

weld preheating

焊接专业网焊接英汉词典_焊接网... ... weld porosity 焊缝气孔 weld preheating 焊前预热 weld preparation 焊缝坡口加工 ...

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