An acidic chemical reaction is produced which turns the paper brittle and discolored.
会出现一种酸性化学反应。这种反应会使纸变脆和褪色。
2
The paper describes how an antibiotic was used to inhibit the full swivel and ratcheting motion of a ribosome from a bacterium called Thermus Thermophilus, which thrives in hot acidic environments.
本文介绍了如何使用抗生素用在从嗜热栖热菌的细菌中抑制核糖体的棘轮充分旋转，在酸性环境中有明显活力。
3
The purity of two acidic polysaccharides (sa, SB) from ginseng pectin was established by cellulose acetate film electrophoresis and glass-fiber paper electrophoresis.