本文主要介绍了无线ddn的特点、承载方式以及网络结构，并结合实际介绍无线ddn在行业应用中的典型案例。
This paper introduces the characteristics, carrying mode and network architecture of wireless DDN, and describes some typical applications of wireless DDN in industries.
探讨了面向订单行业产品数据管理系统的特点，并结合具体项目讨论了设计中版本、视图及信息转换方面使用的技术。
This paper discusses the characteristic of the ETO PDM system and the technology of data version, view and information transformation based on project management.
结合冶金行业连铸车间除尘的实际情况，简要阐述了袋式脉冲除尘设备的电气系统控制范围和特点，并给出一个较为完备的控制方案。
Combining with the situation in bloom plant, the paper describes the controlling extent and the characteristic of the electric system of bag pulse filter. Then gives a more complete control project.
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