查询词典 distillation

In the work, microwave distillation coupled with headspace solid-phase microextraction was developed for the rapid determination of essential oils in Alpinia oxyphylla Miq.fruits and Houttuynia cordata Thunb.

天然植物精油是调味品、药物和天然香料的重要来源，对其挥发性成分的研究在食品、日用品、化妆品、制药和烟草等行业有着重要的意义和作用。

Extraction Method: Obtained through steam distillation of the amyris wood - a small tree known also as West Indian rosewood and sometimes as the Haitian candle tree.

提取方法：由阿米香树木—一种称作西印度玫瑰木的小树和一些海地蜡树通过水蒸气蒸馏而得。

Amination reaction was carried out at temperature of 90℃ to 150℃ for 2h to 10h and then ashless dispersant of polyisobutylene succinimide would be obtained after dehydration with the operations of vacuum distillation and filtration.

结果发现，实验在N_2保护下进行，BPO／PIB质量比为0.035，MA／PIB摩尔比为1.3，反应温度为150℃，反应时间为12h，搅拌速率为250rpm，引发剂过氧化苯甲酰以丁酮为溶剂分六次，时间间隔为30分钟，均量地加入反应器时，烃化反应物聚异丁烯的转化率最高。

The main purpose is to observe the dispersion effects of NaP and azeotropic distillation processing.

主要观察NaP和共沸蒸馏方法的效果。

This technique is commonly employed to effectively separate azeotropic systems, which are difficult for conventional distillation technique.

非平衡模型作为一种新的更严格的建模方法正是在这种情况下而发展起来。

According to process design of azeotropic distillation column of MTBE plant, Commercial application of JCPT tray is introduced.

结合燕化公司MTBE装置扩能改造共沸蒸馏塔的工艺设计，介绍了 JCPT塔板的工业应用情况。

The process of continuous heterogeneous azeotropic distillation for isopropanol-water system was studied.

为适应工业大规模连续化生产的要求，进行了异丙醇-水体系非均相共沸精馏连续过程的实验研究。

Extractive distillation is an important and useful technique for separating close boiling and azeotropic liquid mixtures.

萃取精馏是分离沸点相近或具有恒沸组成混合物的一种重要方法。

The purity of Monochloroacetone can be reached to 99% by azeotropic distillation in the ratio of water to the mixture of Monochloroacetone and 1,1-dichloroacetone 1:1.

实验确定共沸剂水的加入量与氯丙酮混合液的比例为1：1时，能达到良好的分离效果，可得到纯度99％以上的一氯丙酮。

The results show that nbutanol azeotropic distillation can effectively prevent the formation of hard agglomerates in drying process,and good dispersed spherical nanopowders can be obtained,with an average size of 50 nm.

结果表明，用正丁醇共沸蒸馏能有效地防止干燥过程中颗粒间的硬团聚，获得分散性良好的粉体，其平均粒径约为50 nm，形貌为球形。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。