gate mixer

例句：

1. 1. The gate mixer is designed to regulate the flow of air through the doors.
   门挡式混合器设计用来调节空气通过门的流量。
2. 2. The gate mixer was installed in the factory's main entrance to control the traffic flow.
   门挡式混合器安装在工厂主入口以控制车流。
3. 3. The engineer used a gate mixer to adjust the temperature of the cooling system.
   工程师使用了一个门挡式混合器来调整冷却系统的温度。