In the presence of the phase transfer catalysts such as tetramethylammonium bromide, tetraethylammonium bromide or polyethylene glycol ( MW 400 and 6,000), lithium hydroxide is the best alkali among lithium hydroxide, sodium hydroxide and potassium hydroxide.

Therefore, the study of crystal water removal technique to prepare high purity tetramethylammonium hydroxide is very important.

因此，研究结晶水的脱除工艺条件，尽可能的使四甲基氢氧化铵纯度提高，制得三水的四甲基氢氧化铵结晶化合物具有非常重要的意义。

A Study of Tetramethylammonium Cation Across the Water/ Nitrobenzene Interface by Neopolarography

四甲铵阳离子在水/硝基苯界面传输的新极谱法研究

Benzene derivatives and tetramethylammonium formed with compounds showing stronger attraction.

研究中，我们发现苯的衍生物与四甲基铵的形成的复合物分子间的相互作用力比较大，表现出较强的吸引力。

Methylation of Acidic Components of Resin by Tetramethylammonium Hydroxide and Their Analysis by GC-MS

树脂酸性组分的氢氧化四甲铵甲基化与GC-MS分析

Electrochemical Behavior of Hemoglobin at Bare Silver Electrode in the Presence of Tetramethylammonium Chloride and Its Application

在四甲基氯化铵促进下血红蛋白在裸银电极上的电化学行为及分析应用

Reactive pyrolysis gas chromatography ( Py-GC) in the presence of an organic alkali, tetramethylammonium hydroxide(( CH3) 4NOH, TMAH), was applied to the compositional analysis of natural resin shellac.

研究了有机碱试剂，氢氧化四甲铵（tetramethylammonium hydroxide TMAH）共存下的反应热裂解气相色谱（Py-GC）应用于天然树脂紫胶的化学组成分析。

While other agencies have cut back on graduate recruitment, JWT UK still takes between four and eight people each year from 700-750 applicants.

在其它广告公司减少毕业生招聘之际，该公司每年仍会从700至750名申请者中招聘4到8名毕业生。

Ford's immersion event was designed to put senior Ford and JWT executives in direct contact with their desired customers.

福特的“融入式活动”旨在让福特和智威汤逊的高级管理人员与他们的目标客户直接接触。

Coming back to JWT, he has realised that he would never have got the top job had he stayed there.

回到JWT后，他意识到，如果当初他留在那里，就永远不会获得这个最高职位。

One thing that has not changed is the strength and reputation of the JWT UK graduate trainee scheme.

有一点没有改变，那就是jwt uk毕业培训生计划的实力和声望。

It suggested I enjoyed doing things that people saw, and helped me get in at JWT.

这表明，我喜欢做人们可以看到的事情，它还帮助我进入了JWT。

But JWT, the ad agency that created the campaign, found other reasons for the decline.

但创建活动的广告代理机构，智威汤逊公司发现了导致数字下降的其他原因。

JWT is the world's best-known marketing communications brand.

智威汤逊是全球最著名的营销传播品牌。

Potential allelochemicals in rhizosphere soil under green pricklyash are identified by gasspectrometer ( GC-MS ).

用气质联用仪分析了 青花 椒根际区不同深度土壤水浸液中化感物质的成分.

Objective : To introduce a method for determination of clenbuterol hydrochloride in animal liver by GC-MS.

目的: 介绍简化的利用气相色谱-质谱(GC -MS )检测动物肝脏组织中的盐酸克伦特罗的方法.

Methods: The essential oils were by CO 2 supercritical fluid extraction ( SFE-CO 2 ) method thenand identified by GC-MS .

方法采用CO2 超临界流体 萃取飞机草地上部分的挥发油,GC -MS 法鉴定化学成分,归一化法测定各成分相对含量.

METHOD In vitro susceptibility test on tuberculosis bacteria and GC-MS technique were used.

方法体外结核菌药敏试验和气相色谱 - 质谱联用技术(GC-MS ).

Two mineral processing accidents resulted from frothers are analyzed by means of GC-MS.

运用GC-MS剖析两起由起泡剂引发的选矿事故.

Objective: To observe the effect of Jiangya Capsule ( JYC) on serum levels of nitric oxide synthase ( NOS) activity and malondialdehyde ( MDA), and plasma concentration of neuropeptide Y ( NPY) and homocysteine ( Hcy) in patients with senile simple systolic hypertension.

目的：观察降压胶囊对老年单纯收缩期高血压（EISH）患者血清一氧化氮合酶活性（NOS）、丙二醛（MDA）及神经肽Y（NPY）、血浆同型半胱氨酸（Hcy）浓度的影响。

According to the need of market and requirement of construction on the scene, it has been done the detailed analysis and the application study to the commercialization of the JYC ecological material and the physical design of slope protection.

根据市场需要和现场施工要求，对生态基材的商品化研究和护坡结构设计，进行了详细分析和推广应用研究。