A-F：无酸

“Acid-Free”经常缩写成A-F，以便快捷书写、使用。

常见于学术科学领域 ,和图书馆相关。

中文意思为：“无酸”。

Acid-Free具体释义

Even in an acid-free box, a newspaper or magazine will eventually deteriorate.
即便放入无酸(A-F)纸盒中，报纸或杂志最终也会老化。
O.K.to try : non-carbonated bottled water, decaffeinated, acid-free coffee and tea, and some herbal teas.
适宜：不含碳酸的瓶装水，不含咖啡因的无酸(A-F)性咖啡和茶，一些草药茶。
Rising Artist Bristol Board is a fine quality, acid-free sulphite bristol for a variety of uses. It's available in two finishes & Vellum and Plate.
这是一个优良品质，无酸(A-F)，亚硫酸盐板纸，多用途。两种面，滑面和仿羊皮纸面。
Fact : the Smithsonian National Museum uses acid-free paper, tissue, folders, labels, and boxes to prevent artifacts from decomposing and discoloring.
小常识：美国史密森国家博物馆使用无酸(A-F)薄棉纸，薄纱，文件夹，标签，盒子来保存史前古器物，防止它们分解褪色。
The " Lucky Lion " is attractively presented in a decorative folder capturing the significance of Chinese numerology and is encased in a protective, clear, acid-free polymer sleeve.
“金狮”吉利钱用防酸的透明聚合物保护套封起来，贴在一个装饰精美的折叠卡片上。卡片上的图案处处透着中国命理学的玄机。