“极度危害介质”“焊后整体热处理”如何翻译? “极度危害介质”extremely harmful material “焊后整体热处理”heat processing after weld 设备a、b类焊接接头需进行≥20%的x射线检测,jb/t4730-2005ⅲ级合格 above 20%of the type a and b welding connection of the equipment need to be tested by the x -ray ,the result should be accepted for the jb/t4730-2005ⅲ level ≥20%不知是焊接接头面积还是焊接接头数量查看更多