应用气相色谱法测定制备原乙酸三乙酯反应产物中产品质量。
Triethyl orthoacetate in reaction mixtures was separated from other components and determined by gas chromatography with external standard method.
原法乙酸是影响显色稳定性的主要因素。
The original method of acetic acid is influence of the color stability of the main factors.
目的：研究葡萄籽原花青素提取物（GSPE）对大鼠乙酸性结肠炎的治疗作用。
AIM: To study the therapeutic effects of grape seed proanthocynidins extract(GSPE)on acetic acid-induced colitis in rats.
海水富含多种矿物质成分，与生育酚乙酸酯一起配合富含自然多糖的黄原胶，令肌肤有光泽细腻。
Rich in various minerals, sea water works well with tocopheryl acetate and Xanthan, the latter with abundant natural polysaccharides, making the skin illuminating and smooth.
方法原甲酸三乙酯与氰乙酸乙酯缩合，然后和羟乙基肼经环合、水解等一锅法合成5-氨基吡唑-4-甲酸，然后在亚硫酸钠存在条件下加热脱羧得到5-氨基-1-羟乙基吡唑。
METHODS 5-amino-1-hydroxyethyl pyrazole-4-carboylic acid was synthesized through condensation of ethyl cyanoacetate and triethyl orthoformate followed by one-pot methodology of cyclization, hydolysis.
采用盐酸和乙酸—乙酸铵缓冲溶液取代原方法中的乙酸调溶液酸性，用于测定脱碳液中铁含量。
Using hydrochloric acid and acetic acid-ammonium acetate buffer solution instead of acetic acid to adjust the acidity of solution, the content of iron in the CO_(2) removed liquid is determined.
采用盐酸和乙酸—乙酸铵缓冲溶液取代原方法中的乙酸调溶液酸性，用于测定脱碳液中铁含量。
Using hydrochloric acid and acetic acid-ammonium acetate buffer solution instead of acetic acid to adjust the acidity of solution, the content of iron in the CO_(2) removed liquid is determined.
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