The chemical component and many recovery process of waste hydrogenation catalyst are dissussed.

Nitrodiphenylamine is synthesized by direct condensing method, adopting aniline-nitrochlorobenzene as feeds, PEG as phase transfer catalyst.

以苯胺 、 邻硝基氯苯为原料, 采用直接缩合法引入相转移催化剂合成邻硝基二苯胺.

The results showed that poly ( ethylene glycol ) as a phase transfer catalyst can raise the conversion.

指出 聚乙二醇 作为相转移催化剂可增加转化率.

Tetrabutylammonium bromide ( TBAB ) was found to be the most effective phase-transfer catalyst in this reaction.

本实验中,四丁基溴化铵 ( TBAB ) 是最有效的相转移催化剂.

In my 2004 book Catastrophe: Risk and Response, I discussed a number of disaster possibilities.

在2004年出版的《灾难: 风险与应对》一书中, 我讨论了一些灾难发生的可能性.

This important special characteristic enables catastrophe risk securitization to become one ideal alternative risk transfer mechanism.

这种重要的特质,使得巨灾风险证券化成为一种理想的巨灾风险转移方法.

Catastrophe theory can effectively solve catastrophe problem that can possible appear in continuum system.

突变理论能比较有效地解决光滑系统中可能出现的突变问题.

Catastrophe theory provides a coherent framework for modelling the complex dynamics of systems.

突变理论为建立系统的复杂动力学模型提供了一个清晰的框架.

Furthermore, tourism facilitates the development of the catering business and transportation servicewell.

此外, 旅游业能促进餐饮业和交通运输业的发展.

But the environment pollution and the dispute by developing the catering trade and others tends seriously.

但我市饮食服务业的发展带来了环境污染、扰民纠纷也日趋严重.

In recent years, smoke pollution in the catering trade is given to more and more attention.

近几年来, 饮食业油烟污染受到了越来越多的关注.

The catering trade has become a mainstay for the city.

饮食业已经成为这个城市的支柱产业.

The valve is a cold cathode type and in the cathode well are the control grids.

该阀是一种冷阴极和阴极以及是控制网格.

Neon lamp is lamp of gas discharge of low pressure of a kind of cold cathode.

霓虹灯是一种冷阴极低气压气体放电灯.

David stayed up late to get caught up on his homework.

戴维开夜车做完他的作业.

Good girls are bad girls that never get caught.

好姑娘就是从没被逮个正着的坏姑娘.

I tipped across the room so I wouldn't get caught.

我踮着脚尖穿过房间以免被抓到.

Did you ever get caught breaking any school rules?

你曾违反过什么规则?

It is very important in safety evaluation to determining causal relationship between drugs and adverse events.

分析药物不良事件与用药是否相关是安全性评价的重要内容.

Structural equation analysis of the causal relationship between health and perceived indoor environment.

室内环境接受度与健康间结构化方程式分析.

The book traced a causal relationship between the rate of monetary growth and the price level.

这本书细致地描绘了货币供应变化和通胀的水平因果关系.