For ex-ample, the throttle of a thermal unit or the gate of a hydro unit can be adjusted to change load on that machine, and the machine will respond individually to the energy input to its prime mover.

• 例如,调节火电机组的节流阀或水电机组的导流闸门来改变机组的负荷,而机组各自对其原动机的能量输入作出响应。