The density of the liquid layer between the two piezoelectric substrates can be characterized by the change of transient time of a round trip of the BAW pulse.是什么意思_The density of the liquid layer between the two piezoelectric substrates can be characterized by the change of transient time of a round trip of the BAW pulse.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句