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| commercial frequencies; power frequencies; power supply frequencies | |||
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| utility frequency (American English) = "mains frequency" (British English alexeyaxim) | |||
| high-line frequency | |||
| ac line frequency; network frequency (MichaelBurov); supply frequency (MichaelBurov); rated frequency (MichaelBurov); utility frequency (Am. MichaelBurov); mains frequency (Br. MichaelBurov) | |||
| power frequency (сети переменного тока) | |||
| commercial frequency; mains frequency; power frequency; power-line frequency | |||
| industrial frequency | |||
| industrial scientific medical frequency | |||
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| commercial frequency | |||
| промышленные частоты: 90 do fraz, 22 tematyki |