发明授权
EP1882543B1 Friction stir welding machine with portion of the tool being in contact with the materials to be welded having an aluminium nitride coating 有权
要被焊接涂有氮化铝的摩擦搅拌用与所述材料接触的工具部分焊接

Friction stir welding machine with portion of the tool being in contact with the materials to be welded having an aluminium nitride coating
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