文摘

Except heptanoyl chitin, four of them,i.e.acetyl chitin,propionyl chitin,butyryl chitin and hexanoyl chitin,had high degree of substitution(from 1.5 to 2.0)and exhibited lyotropic liquid crystalline behavior and cholesteric phase.

文摘：四种羧酰化甲壳素即乙酰化、丙酰化、丁酰化和己酰化甲壳素在二氯乙酸溶液中均呈现胆甾型溶致液晶相。

Based on the status quo of the rural eadastral management in China, the necessity of establishing a rural cadastral information system is discussed.

文摘：针对我国农村地籍管理的现状，探讨了建立农村地籍管理信息系统的必要性。

The constitution,process principle and parameters of a continuous desulphurization system used to desulphurize the base iron for nodular iron was introduced.

文摘：介绍了一种炉外球铁原铁液连续脱硫系统的组成、工艺原理及有关参数，说明了该系统的使用方法及特点。

New information and communication technology is undoubtedly the most effective mea of rapidly distributing knowledge and information, the core of education, to educationally poor and starved Communities and countries.

中文文摘：新的信息和通讯技术，毫无疑问是向那些教育落后、遭受饥饿困扰的社区和国家传播知识和信息并使之摆脱贫困走向富裕的最有效的途径，而这些信息知识也正是教育的核心内容。

With the reconstruction in phase space,the formulas of r elative dimension D2,representing the dynamic characteristics of crack,are obta ined.

文摘：在探讨用混沌与分形理论研究混凝土大坝裂缝演变机理的基础上，建立了裂缝演变的动力学方程组，通过相空间重构，得出显示裂缝动态特性的关联维数D2的表达式。

Based on the integrated inertial navigation system mainly consisting of inertial navigation system and electrostatically supported gyro monitor,mathematical and hardware-in-the-loop simulation in the course of the development of the integrated navigation system is discussed in this paper.

文摘：本文以用惯性导航系统和静电陀螺监控器为中心的综合惯性导航系统为背景，讨论了综合导航系统研制过程中的数学和半实物仿真技术。

Objective: To improve the understanding and diagnosis of embryonal rhabdomyosarcoma of biliary tree in childhood.

文摘：目的：提高对小儿胆道胚胎型横纹肌肉瘤的认识，减少误诊。

Objective: To improve the understanding and diagnosis of embryonal rhabdomyosarcoma of biliary tree in childhood.

文摘：目的：提高对小儿胆道胚胎型横纹肌肉瘤认识，减少误诊。

The influences of mole ratio of ethanediol and naphthenic acid,a mount of catalyst,reation time,reation temperature etc.on est erification were discussed and the suitable processing conditions were found.

文摘：介绍了用氧化亚锡非酸性催化剂催化合成环烷酸季戊四醇脂的方法，通过讨论醇酸摩尔比、催化剂用量、反应时间、反应温度等因素对该脂化反应的影响，从而确定了适宜的工艺条件。

To regular evaluating the regional sustainable development, an inventory of evaluative items and the operational method was studied.

文摘：讨论了区域可持续发展评价工作的经常化问题，提出了一张通用的指导性评价指标清单及其使用方法。

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