opc da释义：
opc da
例句：
The development of OPC DA server based on ATL and its application in beer automation system are amply introduced.
详细介绍了基于ATL模板库的OPC DA服务器的开发及其在啤酒生产过程自动化控制系统中的应用。
opc ua释义：
opc ua
例句：
In addition to standardized exchange of PLC process data, the OPC UA solution from Beckhoff also offers device-specific information and services.
除了标准化PLC过程数据的交换，倍福的OPC统一架构解决方案还提供特殊设备信息和服务。
