acid-free paper 无酸纸
acid free paper 无酸纸 ; 无酸
durable acid-free paper 耐久性无酸纸
white acid-free tissue paper 白拷贝纸
MF acid free tissue paper 机制拷贝纸
Acid-free and lignin free paper 无酸及不变色纸
acid-free ti ue paper 无酸薄棉纸
white acid-free ti ue paper 白拷贝纸
acid-free tissue paper 无酸薄棉纸
Wrap them right: Protect your ornaments before boxing them by wrapping them individually in acid-free tissue paper or 100 percent cotton cloth.
正确的包裹饰品：用防酸的绵纸或100％纯棉的布料单独包裹每件饰品，可防止饰品互相磕碰。
This paper relates to the synthesis of sucrose polyesters by sucrose and fatty acid using solvent-free process.
本文旨在研究以长链脂肪酸和蔗糖为主要原料合成蔗糖多酯的工艺路线。
In this paper the polyaniline free standing film with better electric conductivity and mechanical properties was prepared by electrochemical method and doping with perchloric acid.
采用电化学方法，以高氯酸为掺杂剂，合成了具有较好导电性能和机械性能的聚苯胺自支撑膜。
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