Direct digital controller (DDC) is the basic control unit of building automation system (bas).
直接数字控制器(DDC)是楼宇自动化系统(BAS)的基本控制单元。
This paper discusses the direct digital control (DDC) in the air-handing unit of air-conditioning system.
本文将讨论空调系统中空气处理机组的直接数字控制（DDC）设计。
The applications of PLC, direct current digital controller and HMI equipment in reforming electrical control system of Bengang's heavy coil unit are introduced.
介绍了PLC、直流数字控制器及HMI设备在本钢重卷机组电气控制系统改造中的应用。
The applications of PLC, direct current digital controller and HMI equipment in reforming electrical control system of Bengang's heavy coil unit are introduced.
介绍了PLC、直流数字控制器及HMI设备在本钢重卷机组电气控制系统改造中的应用。
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