碳-尿素呼气试验 C-urea breath test
4碳-尿素呼气试验 C-urea breath test
14碳-尿素呼气试验 C-urea breath test
尿素-碳氢酸钾 urea-potassium bicarbonate
分析水碳比对尿素合成系统转化率的影响以及改进的方法。
Analyzes the effect of steam and carbon ratio to the conversion rate of urea conversion system and improve method.
用尿素沉淀法和分子蒸馏法研究了二十碳五烯酸(简称e P A)、二十二碳六烯酸(简称d H A)乙酯的分离提纯。
In this study, urea inclusion method and molecular distillation method were applied in the purifications of ethyl ester of EPA and DHA.
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