Unit-area acoustic impedance
[电] 单位面积声阻抗
🗣️ 情景例句
No, she doesn't know Harry Bennett and his daughter Michelle.
不,她不认识Harry Bennett和他女儿Michelle。
Good afternoon,Mr. Green.
午安,格林先生。
After he has retired, he will devote himself to gardening.
他退休后,将致力于园艺。
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