“two-tone diaphone”的概念、定义、翻译、参考文献-科学参考

单词	two-tone diaphone
释义	two-tone diaphone [`tü ¦tōn `dī·ǝ´fōn] ^{ENGINEERING ACOUSTICS} A diaphone producing blasts of two tones, the second tone being of a lower pitch than the first tone.
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