出力效率，功率效率;
例句:
1.
Dominant power efficiency refers to efficiency.
顯性效益就是指節電效益。
2.
Designing a high linearity and high power efficiency wireless transmitter is a bigchallenge due to the nonlinear characteristic of the power amplifier.
而功率放大器又具有非線性特性，因此要設計高效率又高線性度的無線發射機便成了壹個相當困難的挑戰。