This paper analyzes the principle, characteristics and key technologies of DM-GIS, which is used in location based service (LBS), presents the efficient technological scheme for application.
笔者分析了应用于空间定位服务（LBS）的分布式移动地理信息系统（DM-GIS）的原理、特点和有关关键技术，提出了应用DM-GIS技术的解决方案。
The characteristics and the hydration process of fly ash were discussed. The working principle and the technological process of porous light wallboards made from fly ash were also described.
讨论了粉煤灰特性及其水化过程，介绍了粉煤灰多孔轻质墙板的生产工艺原理和工艺流程。
In this paper, the principle, technological characteristics, property and its application of PECC technology were described.
概述了等离子体增强电化学表面陶瓷化技术的原理、工艺、特点、陶瓷层性能；并展望了应用前景。
The technological characteristics of the valve of the shock absorber were analyzed. And the principle for determining the structure of the die and the method for processing the die were introduced.
分析了减震器中阀片的工艺特点，介绍了其模具结构的确定原则和模具的加工方法。
A fiber microphone system is described in this paper. The principle, the technological design, the structure and the characteristics of the system are also analysed.
本文介绍了一种光纤麦克风系统。提出了原理，工艺设计，系统结构及其物性。
The characteristics of straight screw sleeve connection technique of rolled reinforcement are introduced as well as technological principle, process and application scope.
介绍了剥肋滚轧直螺纹钢筋机械连接的工作原理，阐述了接头的特点、应用以及现场检验与验收工作。
Based on the analysis of the technological characteristics of the moulded part, the practical die structure was presented, the structure design and working principle of the mould were discussed.
分析了塑件的工艺性，给出了实用的压模结构，论述了模具结构设计和工作过程。
Based on the analysis of the technological characteristics of the moulded part, the practical die structure was presented, the structure design and working principle of the mould were discussed.
分析了塑件的工艺性，给出了实用的压模结构，论述了模具结构设计和工作过程。
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