The chlorination of pivaloyl chloride to prepared 3-chloropivaloyl chloride was took place in a packed distillation column with total reflux.
将新戊酰氯氯化为制得的3-氯新戊酰氯在全回流的填充蒸馏塔中进行。
General relief valve total reflux time shall not exceed 3 minutes.
一般安全阀全回流时间不得超过三分钟。
This paper proposed and studied a new operation-the cascaded total reflux batch distillation.
本文提出并研究了一种新型的间歇精馏操作过程——全回流间歇精馏串联操作。
Results The symptoms severity scores and the total reflux time were significantly decreased in both groups.
结果两组的症状指数及反流时间均明显下降。
The methanol rectification unit used in Tuha Oilfield Methanol Factory includes two rectification towers adopting total reflux operation.
吐哈油田甲醇厂甲醇精馏装置系两塔精馏，采用全回流操作。
A case study of gas separation system is given to illustrate the effects of product quality, reflux ratio and tower pressure to total economic benefit through flow simulation.
本文以某气体分馏装置为例，通过严格的流程模拟，分析了产品质量、回流比和塔压等操作参数对总经济效益的影响。
Using reflux ratio and recovery as decision variables and total cost as objective function, the computer programs were programmed and optimized calculation was carried out.
以回流比、回收率为决策变量，总费用最小为目标函数，编制计算机程序进行优化计算。
Because of the lack of esophageal peristalsis, a partial (Dor or Toupet), rather than a total fundoplication is frequently added to prevent reflux.
由于食管蠕动，部分(多尔或佩)，而不是总胃底折叠术缺乏经常补充，以防止回流。
Abstract: in this study, the reflux extraction and ultrasonic extraction processes of total flavonoids from Podocarpus nagi leaves were optimized using orthogonal experiments.
摘要：本研究采用正交试验设计分别优选回流提取和超声波提取竹柏叶总黄酮的最佳工艺条件。
Abstract: in this study, the reflux extraction and ultrasonic extraction processes of total flavonoids from Podocarpus nagi leaves were optimized using orthogonal experiments.
摘要：本研究采用正交试验设计分别优选回流提取和超声波提取竹柏叶总黄酮的最佳工艺条件。
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