roll-welded (monolayered) cylinder
roll-welded (monolayered) cylinder是什么意思、roll-welded (monolayered) cylinder怎么读
【化】 卷焊式圆筒; 卷焊式单层圆筒
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【化】 卷焊式圆筒; 卷焊式单层圆筒