优势原理

Spinel lithium manganese oxide has become the most important material of li-ion second battery for its inexpensive price,excellent character and avirulence,and also gets some achievements in the recent years.

重点介绍了尖晶石相锂锰氧化物的主要合成方法，如固相反应法、软化学法等，并对它们的原理、优势和缺点进行了简单的介绍和讨论，对锰酸锂合成工艺的未来发展和走向作了简单的展望。

In this article, by comparative research of the basic principles, agents, methods and effects of the hot metal pretreatments of desiliconization, dephosphorization and desulphurization, the writer defines that the converter-shaped pretreatment of desiliconization, dephosphorization and desulphurization has become the key pretreatment technique of the hot metal for its fine effect, low cost, and outstanding economic and environmentally friendly advantages.

本文通过对铁水预脱硅、脱磷、脱硫基本原理、预处理剂、预处理方法和处理效果的比较研究，明确了转炉型&三脱&工艺因其效果好，成本低和突出的经济、环保优势成为铁水&三脱&预处理的主流工艺。

This paper retrospectively analyzes the information concerning haemorrhoidal treatment by rubber band ligation, summarizes its history, indication, contraindication, skill, effect, evaluation and influence on coloproctology, which also point out its ascendancy and new progress.

摘要回顾和分析近代以来套扎法治疗痔疮的国内外文献，总结归纳了套扎法治疗痔疮的历史、适应症与禁忌症、技术原理、疗效和国际评价，以及在该领域的地位，并指明该法的优势所在及其新进展。

It puts forward the idea of the development strategy of the high-tech industrial cluster on the basis of organizational ecology principle, including key kind, mutualistic symbiosis, system management, ecological chain, complementary advantages, difference development, and benefits-sharing principle.

7提出了基于组织生态原理的高科技产业集群发展战略的理念，包括关键种、互惠共生、系统管理、生态链、优势互补、差别发展、利益共享原则。

Advantages for improving use ratio of circulating water of modern packless spray cooling tower be suitable for northwest area and its transforms were put forward.

介绍了循环水冷却原理，提出适于我国西北地区的新型无填料喷雾冷却塔提高循环水利用率的优势及改造方案。

The application of geographic information system to forest resources management is revie...

回顾了地理信息系统在森林资源管理几个主要方面的应用；阐述了WebGIS的概念、基本原理、实现方式、特点优势以及WebGIS在森林资源信息管理应用现状与森林资源数字化、网络化管理的应用前景。

A new hybrid controll principle that combine the mechanical, electrical and hydraulic tenology in plactic injection molding macjine is also proposed, which has an advantages of high energy effiency, low cost and the ability to drive the cylinders parallelized by only one pump.

提出一种新的机电液复合控制的注塑机回路原理，具有能量效率高，成本低，可单泵并联驱动等优势。

The key technology of permeable reactive barrier and the principle of zero valent iron remediation were summarized,and the study progress and practical applications were reviewed.

综述可渗透反应墙的技术关键、零价铁修复的原理和PRB的最新进展和实例应用，介绍PRB技术处理地下水的技术优势及存在问题。

The tray continuous desiccating system for drying the compound was devised based on analysis of the properties of 5-sodiosulfoisophthalic acid dimethylester before and after drying, and the structure, working principle, technical process and features of the desiccating system and its applications was introduced. From the comparison of efficiency, energy consumption, continuous operation and final product quality, the tray continuous desiccator was better in desiccation of 5-sodiosulfoisophthalic acid dimeth...

摘 要：通过对间苯二甲酸二甲酯-5-磺酸钠干燥前后物料性质的分析，提出了应用于间苯二甲酸二甲酯-5-磺酸钠干燥的盘式连续干燥系统，介绍了这种干燥设备的结构、工作原理，阐述了其工艺流程及工作特点，分析了这种干燥形式的优势及应用领域，并通过与另外一种干燥器-旋转闪蒸干燥器在工作效率、能耗、操作的连续性及干燥后产品的质量等方面的比较，表明了在间苯二甲酸二甲酯-5-磺酸钠干燥作业中这种干燥器是干燥设备的适宜选择。

The use of extentics principle and its related methods can solve problems which are incompatible, through analysis of matter elements and model transformation and making extentics engineering approach to tourism policy, inaugurating new ideas for t.

利用可拓学原理及相关方法在解决矛盾问题方面的优势，通过物元分析和变换模型，将可拓工程方法引入旅游决策，为实现景观设计和景点保护开辟了新的思路。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。