Unit-area acoustic impedance
[电] 单位面积声阻抗
🗣️ 情景例句
They are expecting their first child.
他们在怀他们的第一个小孩。
I am very fortunate to have met you.
我很高兴能见到你。
Bison were killed for their meat, while their fur provided warm clothing during cold winters.
他们杀野牛,吃野牛肉,用野牛毛皮制成冬季御寒的衣服。
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