rheostatic controller

例句：

1. 1.The rheostatic controller is used to maintain a constant flow rate in the system.
   节流控制器用于保持系统中的恒定流量。
2. 2.In this application, the rheostatic controller adjusts the valve opening based on the pressure drop across the throttle.
   在这个应用中，节流控制器根据节气门处的压力降来调整阀门开启度。
3. 3.The rheostatic controller helps to optimize the fuel efficiency of the vehicle by controlling the amount of air and fuel mixture.
   节流控制器通过控制空气和燃料混合物的量来优化车辆的燃油效率。