The feature of the ISD (Individual Speech Device) is that it adopts direct analogue record and access technique, and that speech signals, in their original forms, are recorded into analogue memory devices directly and can be preserved for a long period.是什么意思_The feature of the ISD (Individual Speech Device) is that it adopts direct analogue record and access technique, and that speech signals, in their original forms, are recorded into analogue memory devices directly and can be preserved for a long period.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句