METHODS Contents of anthraquinones in Radix et Rhizoma Rhei extracts were determined using HPLC after water reflux, deoxygenated water reflux or ethanol reflux.
方法：采用HPLC法对大黄水回流、隔氧水回流及乙醇回流后提取液中各种蒽醌类成分的含量进行监测。
Secondly, , check whether the drainage is smooth, there is no leakage and reflux and water phenomenon, high-grade water supplies with or without scratches.
其次，检查排水是否顺畅，有无渗漏及回流和积水现象，高档水件用品有无划痕。
Basis of selecting straight spraying cleaning and reflux water compensation structure as coating-pretreatment equipment is introduced.
介绍了涂装前处理设备选择“直喷清洗、回流补水”结构的依据。
In accordance with ferrous ammonium sulfate in water samples to calculate the amount of material to restore the volume of oxygen consumption, which was potassium dichromate titration reflux.
根据硫酸亚铁铵的用量算出水样还原性物质消耗氧的量，这就是重铬酸钾回流滴定法。
Because the packings on the second plate were blocked by polymer, water from the reflux pump condensed and entered into the bottom of the tower to cause the cavitation of the pump.
汽油分馏塔第二层塔填料堵塞，全塔气-液传热传质状况恶化，使水降至塔釜引起“暴釜”，最终导致急冷油泵气蚀不上量。
In order to determine the influence on account of operating conditions, aeration time, DO, reflux ratio, water drainage ratio were studied by using small CAST test-bed.
为了确定运行条件的影响，采用搭建CAST小试试验台对曝气时间、DO、回流比、排水比进行了研究。
The efficiency, stability and repeatability of ultrasonic extraction were better than water bath reflux extraction.
超声提取王不留行刺桐碱的提取效率、稳定性和重复性都优于水浴回流提取法。
The efficiency, stability and repeatability of ultrasonic extraction were better than water bath reflux extraction.
超声提取王不留行刺桐碱的提取效率、稳定性和重复性都优于水浴回流提取法。
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