Thermal noise counting rate of the EMI 9635 QB type photomeltipliers reduces to 1/4-1/3 of the rate at room temperature.是什么意思_Thermal noise counting rate of the EMI 9635 QB type photomeltipliers reduces to 1/4-1/3 of the rate at room temperature.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句