This curve shows that the maximum power output point is a selectable operation point, but the maximum efficiency point is a unacceptable operation point because it occurs at zero power output.是什么意思_This curve shows that the maximum power output point is a selectable operation point, but the maximum efficiency point is a unacceptable operation point because it occurs at zero power output.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句