国内外

Propylene oxide, propionaldehyde, acrolein and acetone are one of the most important chemical feedstocks.

近二十多年来，国内外研究者一直致力于流程简单、副产物少和无污染的生产C_3氧化产物的绿色催化工艺的研究。

Guangzhou Junshi Leather CO., LTD is a comprehensive company, integrating designing, productions and brand management. It has the brand "Actinia". The design style is suit for the international fashion trend and also suit for the domestic and international markets.

广州骏仕皮具有限公司是一家集开发设计、规模生产、品牌经营为一体的现代化企业，公司旗下拥有"Actinia 艾·天妮"品牌，设计风格与国际流行元素接轨，同时紧贴国内外市场。

The article is to summarize the progress of the researches on the rare actinomycete resources in different habitats in recent years.

文章就近年来国内外学者在不同生态环境中稀有放线菌的选择性分离方面的有关研究进展进行介绍。

Dai has so far King in 30 countries and regions in sales, by all sectors of praise at home and abroad, each of the machinery for its excellent performance, the lowest cycle time for action, creating a unique, accurate, and to effectively reduce costs .

迄今为止敬岱公司已在三十个国家和地区销售，深受国内外各界好评，每一部机械都以其绝佳的性能，最低动作循环时间为客户制造独特、精准的制品，并有效降低成本。

Will always adhere to active service, friendship and cooperation, common development with friends at home and abroad.

公司将始终坚持积极服务，友好合作，与国内外朋友共同发展。

After summarizing the research actuality about this kind of structure,the research contents of this paper are presented.

在综述国内外关于此类结构的研究现状后，提出了本文的研究内容。

For the advantages of mild reaction conditions,DDC condensation method and acyl chloride esterification method are much more popular.

由于具有反应条件温和的优点，二环己基碳二亚胺脱水缩合法和酰氯酯化法是目前国内外最常用的两种方法。

The main idea behind these methods is to take advantage of the known state variables and the theorem of addition for linear system without building up a new Jacobian matrix again. But the equivalent computation of algebraic equation must be performed to get state variables corrections. Accordingly, the speed required to model the contingencies is not fast enough to meet the demand of fast contingency analysis under emergency condition, which is proved by several well-known blackouts caused by flow transferring.

但是，这些算法中的大多数是在实时潮流计算的基础上，利用其中间结果和线性系统的叠加原理，直接求解出事故后的状态变量，都需要通过网络方程求解整个网络状态变量的增量，计算量较大，难于满足紧急状态下快速安全性评估的实时性要求，国内外一系列因静态潮流问题引起的大停电事故就是例证。

On the basics of briefly summarizing the research and application presents of building coatings and nano-composite building coatings in domestic and overseas, we presented a creative approach of modified exterior and interior building latex coatings applying inorganic nano-powders and its compound, systematically studied the effect of factors such as nano-material's category、additive capacity、dispersing method on the behavior of exterior building coating's weathering resistance、scratch resistance、water resistance、alkaline resistance and on the behavior of interior building coating's restraining bacterium、degrading all kinds of bad organic matter,and triumphantly developed nano-composite building latex coating.

本文在简要叙述国内外建筑涂料和纳米复合建筑涂料的应用研究现状的基础上，提出了使用无机纳米粉体及其复合材料改性建筑外墙乳胶漆的创新思路，系统地研究了纳米粉体材料的种类、添加量、分散方式等因素对外墙乳胶漆耐候性、耐洗刷性、耐水耐碱性等性能的影响，以及这些因素对内墙乳胶漆抗菌杀菌、降解有害有机物等性能的影响，成功地开发了纳米改性建筑外墙和内墙乳胶漆产品。

Mixing a little additive into the process of beton can modify capability of beton, save cement and enhance benefit of techno- economy. So it gets more and more regarding all over of world.

在配制混凝土时掺入少量的外加剂，能明显改善混凝土的性能并节约水泥，提高技术经济效益，因而受到国内外的普遍重视。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐