英[ˈgeɪtfəʊld]
美[ˈgeɪtfoʊld]
Gatefold of Front Cover ( Trim )
封面拉页 ( 实度 )
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The gatefold is a double fold, and is determined by the width of the pattern pieces.
门式折叠是两次折叠, 它由样板的宽度来决定.
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