And then set the book in front of the mouth are staggered on piling up before, for applanation, eliminate lining page and book sealed shell in the middle of air so that they are bonded and.

• 然后将书本前口对前口错开堆放，进行压平，排除衬页与书封壳中间留存的空气，使它们黏结更牢固、平服。