The main factors that influence the extractive distillation were researched such as the theoretical plate number, feedboard, solvent ratio, reflux ratio, the temperature of solvent.
通过计算考察了理论板数、进料位置、溶剂比、回流比、
剂温度等主要影
因素的改变对

馏过
的影
,
业应用提供理论与实践基础。
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However, the most accurate study to diagnose GERD is a 24-hour pH monitoring in lower esophagus; where a thin tube with an electrode attached is placed inside the esophagus in order to detect how long the acid reflux stays in there.
然而,诊断GERD的最精确的方法是在24小时
下段pH监测,在
道内放置
个带有电极的细
,以监测酸反流在
道内停留的时间。