Jīngtǐ guǎn xūyào shìdàng de piānyā cáinéng zhèngcháng gōngzuò.
A transistor needs proper bias voltage to operate normally.
Tips
usage
Electronics term - the steady DC voltage applied to set a transistor's or amplifier's operating point. 偏 here means 'biased / offset' (away from zero), not 'partial / prejudiced' as in everyday speech.