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Several kinds of corrugated boards intersecting in different angles were studied to see if the four - sheet corrugated board can replace the five - sheet corrugated board in different circumstances.
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释义
节省了夹芯纸的用量,降低了瓦楞纸板的成本,而且强度高,对制作成品纸箱、纸盒提供了高强度的优良新型结构。
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