The super-heterodyne receiver is always applied in modern communication system, mixer becomes the key component as is at the first part of system.
在现代通信系统中，毫米波频段通常采用超外差接收机，混频器作为第一级就成为关键部件。
There are several kinds of logical entity defined in tightly coupled conference system: FOCUS, Mixer, Conference Policy Server and Conference Event Notification Server.
紧耦合结构会议系统中定义了如下逻辑实体：FOCUS、媒体混合器、会议策略服务器和会议事件通知服务器。
Milking System: Milk tank cooler, Milking Machine, Feed mixer (TMR).
奶牛设备：牛奶制冷罐，挤奶机，TMR饲料搅拌机。
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