TheChineseinventedpa的知识精选

   TheChineseinventedpaperin105A.D.Theymixedthebarkofat...
问题详情:   TheChineseinventedpaperin105A.D.Theymixedthebarkofatreeandrags(破布)withwater,putascreenintothemixture,andliftedoutathinpieceofwetpaper.Theydriedthepaperinthesun.    TheChinesekeptth...
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