... operation frequency of NMR 核磁共振仪的工作频率 mains operation frequency 电网工作频率 frequency operation 射频运用 ...
基于12个网页-相关网页
设定电网工作频率范围 f AC
尽管供电电网中不大可能在正常工作频率下谐振，但有可能在其它谐振频率下谐振。
Although it is unlikely that resonance in a supply network be obtained at normal supply frequency, it is possible to have this condition at harmonic frequencies.
当电网电压和频率的变化时，分析了电动机、变压器、控制及保护系统、照明系统、通信导航设备等受电器工作的可靠性。
When the variation of bus-bar voltage and frequency occurs, the reliability of electric motors, transformers, control and protection system is analyzed in this thesis.
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