sub·son·ic 
(sŭb-sŏnĭk)
(sŭb-sŏnĭk)adj.
1. Of less than audible frequency.
2. Having a speed less than that of sound in a designated medium.
| 单词 | subsonic |
| 释义 | sub·son·ic (sŭb-sŏnĭk)adj. 1. Of less than audible frequency. 2. Having a speed less than that of sound in a designated medium. |
| 随便看 |
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