ultrasonic
adj.
"having frequency beyond the audible range," 1923, from ultra- + sonic. For sense, see supersonic.
〔蒋〕[ultra-超，son声音，-ic形容词后缀，…的] 超声的，超音速的;[转作名词] 超声波
〔蒋〕[ultra-超，son声音，-ic形容词后缀，…的] 超声的，超音速的;[转作名词] 超声波
| 词汇 | ultrasonic |
| 词根词缀 | Online Etymology Dictionary 词根李平武蒋争 ultrasonic adj. "having frequency beyond the audible range," 1923, from ultra- + sonic. For sense, see supersonic. 〔蒋〕[ultra-超，son声音，-ic形容词后缀，…的] 超声的，超音速的;[转作名词] 超声波 |
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