针对不同形式的机壳，进行各部位焊接坡口形式分类，确定机壳中常用的焊接坡口形式、焊缝标注代号，为设计者在焊接机壳的设计中提供了方便和依据。
According to the different casing, the welding groove of all parts is classified and the form of welding groove and the welds marking number used commonly in casing are determined.
针对不同形式的机壳，进行各部位焊接坡口形式分类，确定机壳中常用的焊接坡口形式、焊缝标注代号，为设计者在焊接机壳的设计中提供了方便和依据。
According to the different casing, the welding groove of all parts is classified and the form of welding groove and the welds marking number used commonly in casing are determined.
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