2) CALIS System
CALIS系统
1.
The Present State, Reourees Sharing and the Development of CALIS System;
CALIS系统的现状、资源共享及发展
3) CALIS Portal System
CALIS门户系统
4) union search
统一检索
1.
Based on the summary and analysis of the basic user needs and characteristics of digital full text resources among the academic libraries, this paper designed a framework model of digital resource and service environment, and, as an example, gave a brief introduction to cross-search technology that is one of the key points of CALIS union search platform.
在归纳分析高校图书馆用户基本需求和数字全文文献馆藏特点的基础上 ,提出了数字文献服务环境的一种结构模式 ,并以CALIS统一检索平台为例对其中关键环节之一的跨库检索技术做了简要介
2.
There are many problems like various data types and complicated structures in modern big portal system,and these all make it difficult to create a union search platform for the system.
现代大型门户信息系统普遍具有数据类型繁多,系统结构复杂等特点,这一系列特点都给系统的统一检索带来了困难。
5) Unified search
统一检索
1.
The OAI protocol presented such a condition that it was able to design and implement a uniform,highly efficient Unified Search System,On basis of a Digital library project,it was introduced OAI framework,and elaborated a design and implemented for unified search system based on OAI protocol.
OAI协议为实现一个统一、高效的统一检索系统创造了条件。
2.
With the informationization and networking of the National Science and Technology Awards as well as its different departments heterogeneous and distributed stored awarding information, it is necessary to build a unified searching system in which variant resources of different types and structures in different environments can be integrated.
NET Remoting和Web Services技术相结合的统一检索系统体系结构,并对系统结构层次及其功能模块进行了详细的分析。
补充资料：CA
是以精制短棉绒经醋酸活化，在硫酸催化剂存在下，用醋酸和酯酐混合液使之乙酰化，然后加稀醋酸水解到所需的酯化度的产物。按照酯化度不同，可分为一醋酸纤维素、二酯酸纤维素、三醋酸纤维素。酯化度不同而有不同的性质和用途。酯化度大小对溶解性能有很大影响，酯化度降低则在极性溶剂中的溶解度增加，但在非极性溶剂中溶解度减小。醋酸含量60％-61．5％的三醋酸纤维素，因含羟基少，对水不敏感，可溶于二氯甲烷等。醋酸含量51％-58％的二醋酸纤维素为一般工业上用的醋酸纤维素，可溶于丙酮。三醋酸纤维素和
二醋酸纤维素为白色无定形屑状或粉状固体，无明显熔点，220 ℃开始软化。相对密度1．27-1．32，吸水性(24h)1％-4％。
醋酸纤维素可用于配制溶剂型胶粘剂，粘接眼镜、玩具等塑料制品。贮存于阴凉、通风、干燥的库房内。防雨、防晒。
二醋酸纤维素为白色无定形屑状或粉状固体，无明显熔点，220 ℃开始软化。相对密度1．27-1．32，吸水性(24h)1％-4％。
醋酸纤维素可用于配制溶剂型胶粘剂，粘接眼镜、玩具等塑料制品。贮存于阴凉、通风、干燥的库房内。防雨、防晒。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条