The longer tests also provide functionality and stability testing under the prescribed load.

更长时间的测试还提供在指定的负载下功能和稳定性测试。

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The control system functions to keep speed of the machines substantially constant and the voltage within prescribed limits, even the load may change.

控制系统的功能是在负载随时变化的工况下，确保机组转速恒定，并使电压输出控制在要求范围之内。

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Spring: Elastic machine component able to deflect under load in a prescribed manner and to recover its initial shape when unloaded.

弹簧：一种有弹性的机器组件，能在承载时变形到预期的状态，卸载后又恢复到原状。

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