“echometry”的英英意思

单词 echometry
释义 eˈchometry ? Obs.
[mod. f. Gr. ἠχώ echo, or ἦχος sound + -µετρία measuring. Littré has Fr. échométrie ‘art de calculer, de combiner la réflexion des sons’, = sense 1 below.]
1. ‘The art of making vaults or arches so as to produce an artificial echo.’
1818in Todd.
2. The art of measuring the duration of sound.
1847in Craig.
“echometry”的英英意思

 

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