基本解釋[動(dòng)力與電氣工程]折點(diǎn)電壓詞組短語短語saturation breakpoint voltage 飽和斷點(diǎn)電壓breakpoint voltage更多詞組專業(yè)釋義動(dòng)力與電氣工程折點(diǎn)電壓