A switching matrix using a Model 7168 Nanovolt Card and a Model 7156 General Purpose Card can be constructed to switch the voltmeter and current source among the four sample terminals.是什么意思_A switching matrix using a Model 7168 Nanovolt Card and a Model 7156 General Purpose Card can be constructed to switch the voltmeter and current source among the four sample terminals.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句