基本解釋[電] 柺點(diǎn)電壓詞組短語(yǔ)短語(yǔ)knee -point voltage 柺點(diǎn)電壓;膝點(diǎn)電壓knee point voltage更多詞組專業(yè)釋義動(dòng)力與電氣工程柺點(diǎn)電壓