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。
2
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。
3
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.