A calibrated He-Ne laser and a mechanical chopper producing a modulated frequency are used to measure the voltage responsivity of ZnO pyroelectric sensors.是什么意思_A calibrated He-Ne laser and a mechanical chopper producing a modulated frequency are used to measure the voltage responsivity of ZnO pyroelectric sensors.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句