An amplifier or attenuator may be needed to ensure that the required level of power is transmitted through the switch.
可能就需要一个放大器或衰减器，以确保通过开关传输所需的功率。
The practicability analysis of the power flow evaluation criterion and the relationship between the vibration level and transmitted power flow are presented.
探讨了功率流分析在隔振设计中的可行性，以及功率流评估指标与振级落差指标之间的内在联系。
These are stepped up to the transmission voltage level, and power is transmitted to transmission substations where the voltages are stepped down to the subtransmission level (typically, 69 to 138 kV).
这些都加大了对传输的电压水平，并且动力被传递给传输站，其中的电压呈阶梯状下降到变速级(通常为69到138千伏)。
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