diàn​yuán HSK4

power source

电源 電源 diàn​yuán
power source noun
device that converts other forms of energy into electricity, such as a battery or generator
power supply unit noun
device within electronic equipment that transforms electrical energy into the required form, such as a rectifier or transformer

Frequency

Movie subtitles
9.36 per million appears in 3% of films
Written text
15.3 per million

Details

HSK 2.0
Level 6
HSK 3.0
Level 4

Sources