JMM-2400 is by microprocessor pilot instrument, have pinpoint accuracy plan frequency implement, data of 9 digital indication measurement.是什么意思_JMM-2400 is by microprocessor pilot instrument, have pinpoint accuracy plan frequency implement, data of 9 digital indication measurement.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句