长网造纸机的发明被认为是造纸史上伟大的事件，这是1798年罗伯特路易斯在法国发明的。
The invention of the fourdrinier machine was claimed to be the greatest event in the history of papermaking. It was an invention of Louis Robert in France in 1798.
叠网成形造纸机动性：在标准长网造纸机上面设置额外一条网的造纸机。
Duoformer: Papermaking machine which has an additional wire running on top of the normal machine wire.
叠网成形造纸机动性：在标准长网造纸机上面设置额外一条网的造纸机。
Duoformer: Papermaking machine which has an additional wire running on top of the normal machine wire.
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