液

Aminobutyric acid in tea was extracted, isolated and determined. Water achieve a better effect than ethanol in extracting γ-aminobutyric acid, and γ-aminobutyric acid content was enhanced by 20%; 732 positive ion resin columns (2.5×50cm) was used to isolate, citric acid and ammonia water were used as elutes, based on pH linear gradient. Results indicated that γ-aminobutyric acid inelute could reach 39%; thin layer scanner could measure the content of γ-aminobutyric acid.

对茶叶中γ-氨基丁酸的提取、分离及检测方法进行了研究，分别采用水和乙醇作为提取溶剂，结果发现用水提取能达到更好的效果，γ-氨基丁酸含量提高20％；同时采用离子交换树脂对γ-氨基丁酸提取液进行分离，提取液上732阳离子树脂柱(2.5 ×50cm)，使用柠檬酸和氨水缓冲液进行pH线性梯度洗脱，洗脱液中γ-氨基丁酸最高浓度达39％；采用薄层扫描仪对γ-氨基丁酸的含量进行检测，研究并确定了检测的条件及参数。

They can be divided into 2 major categories, first printed circuit board chemicals including etchants, inner layer cleaners, desmear chemicals, electroless copper, stripper agents, etc. These products caters to process needs of both domestic and foreign PC board manufacturers.

主要的产品可分两部分，一为印刷电路板的化学药品，包括有蚀刻液、内层清洁液、去胶渣化学品、无电镀化学铜、黑棕化液和剥锡铅液等，提供国内外各PC主板公司生产流程所需的化学药品。

Main contents of the thesis are as follows: Description of the present usage of liquid cooling system, presentation of a new type of liquid cooling system and description of its work principles; Design of the liquid cooling system, which mainly deals with the design and collating calculating of serpentine condenser and heat exchangers adopted in this system. Meanwhile, the model chosen calculating of compressor、thermal expansion valve、plate evaporator、water pump and the like equipment used in the system are also carried out.

本文的主要内容如下：对液冷源使用现状进行了描述，提出了一种新型液冷源系统并对其工作原理进行了阐述；对系统进行了设计，主要对系统中所采用的管带式冷凝器和水侧空/液换热器进行了设计和校核计算，同时对系统中所用到的压缩机、热力膨胀阀、板式蒸发器、水泵等配套设备进行了选型计算；分别对制冷系统和冷却液循环系统进行了数学建模。

The company's main products are: single-color boiler water level gauge glass, quartz glass single two-color series of water level table; Maglev Series Direct Reading and Remote Level Gauge, magnetostrictive liquid level meter, electrode contact point and dual-listed water level gauge, inductive level sensors, external ultrasonic level gauge and a variety of liquid level sensor transmitter and control Alarm, etc. more than 10 types of level instrumentation.

公司的主要产品有：玻璃板单双色锅炉水位计、石英玻璃管式单双色系列水位表；磁浮式系列直读和远传液位计、磁致伸缩液位计、电极点及双联系列水位计、电感式水位传感器、外置式超声波液位计以及各种液位传感变送器，控制报警仪等十多个种类的物位仪表。

Wholly-owned subsidiary, Ningbo City Jiangdong scientific instruments factory specializing in the production of UFZ Series Magnetic Level Gauge flap, HG5 series of glass-type liquid level meter, HG5 Series Glass Plate Level Gauge, UGS Series Color quartz glass tube liquid level meter, digital display temperature controller, temperature transmitter, a computer program controller, digital DC regulated power supply, the exchange of automatic voltage regulator, DLD Series Intelligent Speedometer, electric tool speed control switches, meters and other products bubble tester.

下属全资企业宁波市江东科学仪器厂专业生产UFZ系列磁性翻板液位计、HG5系列玻璃管式液位计、HG5系列玻璃板式液位计、UGS系列彩色石英玻璃管液位计、数显温度控制仪、温度变送器、电脑程序控制器、数字直流稳压电源、交流自动稳压器、DLD系列智能车速里程表、电动工具调速开关、米泡测试仪等产品。

It was concluded that the degradation of lube oil was caused by the leakage of K2CO3 caustic liquid resulted from the damaged mechanical seal, low sealing water pressure, high liquid level of dripping sum, poor heat radiation of the shaft seal of lean liquid pump and large space of shaft protection ring etc.

分析了中原大化集团合成氨装置贫液泵润滑油系统滤油器压差迅速升高的原因，指出主要是机械密封损坏或密封水压过低、滴水槽液位过高、贫液泵轴封散热不好、轴承护圈间隙过大等，从而使K2 CO3漏入碱液润滑油系统，导致润滑油变质。

At first, the difference of the iron chloride and iron nitrate precursor was studied. By the photoelectrochemical results, the film prepared by iron chloride precursor showed better photoelectrochemical response than the film prepared by iron nitrate precursor, and the reasons were discussed.

研究中首先比较使用氯化铁前驱液与硝酸铁前驱液所制备出的氧化铁薄膜的差异，由实验结果知道，使用氯化铁前驱液的薄膜，其光电化学表现比使用硝酸铁前驱液的薄膜来得好，而研究中也探讨了其可能的原因。

The influence of reaction temperature, emulsifier and initiator on the preparation of micro - latexes was discussed with emphasis.

在概述乳液聚合及微乳液聚合特点的基础上，介绍了胶乳剪切分散法和微乳液聚合法制备超微胶乳，重点讨论了反应温度、乳化剂和引发剂对微乳液聚合法制备超微胶乳的影响。

By taking polysiloxane emulsion as seed emulsion, copolymer latexes of polyacrylate/polysiloxane were synthesized using seeding emulsion copolymerization.

采用聚硅氧烷乳液为种子乳液，将丙烯酸酯和聚硅氧烷进行乳液共聚，合成了该共聚物乳液。

Since the marking water will be supplied with the gauge pump marking water supply system, the marking water consumption for each marking will be even so that less water would be used and more stable marking will be done.

由于使用泵液系统进行电解液供给，使每次打标时所消耗的电解液量都是均匀的，不仅节省电解液，而且打出的标记更加稳定。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。