用材与腐蚀
material selection and corrosion
用户认证与授权
user authentication and authorization
用户与天线联合选择
Joint user and antenna selection
用户与网络接口
user-network interface
UNI (User-Network Interface
用眼习惯与负担
eye care habits and vision burden
用于过程控制的对象连接与嵌入技术
OPC OLE for process control technology