Use desoxyribonucleic acid as a reference standard in metabolic experiments.
在代谢实验中使用脱氧核糖核酸作为参考标准。
2
When he joined the group a few years ago the fatty acid lipid vesicles were already standard.
几年前他加入这个研究组时，脂肪酸囊泡为标准囊泡，并观察膜泡增长速度。
3
The standard states that the citric acid-sodium nitrate treatment is the least hazardous for removal of free iron and other metallic contamination and light surface contamination.