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。
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。
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.
该标准声明：柠檬酸-硝酸钠处理在去除游离铁合其他金属污染和轻的表面污染物时，危险性最低。
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