This paper discusses the basic function and composition of travel geographic information system (TGIS), on the basis of which, the technological frame of Urumqi TGIS is explained.
本文首先论述了旅游信息系统的基本功能和组成，并在此基础上阐述了乌鲁木齐旅游信息的技术组成框架。
The composition and basic function are introduced, the good results after the technical reform are expounded.
介绍了电控系统的组成及基本功能，阐述了改造后的良好效果。
The paper briefly introduces the brake function, composition and basic brake principle of the CRH3 EMU.
本文简要介绍了CRH3型动车组制动系统的制动功能、组成以及基本原理。
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