Now, mechanical waves need a medium to travel through.
现在,机械波需要介质才能传播。
单词 | mechanical wave |
例句 |
原声例句
可汗学院Khan Academy Middle school physics - NGSS初中物理 Now, mechanical waves need a medium to travel through. 现在,机械波需要介质才能传播。 可汗学院Khan Academy Middle school physics - NGSS初中物理 Now, everything that we have just talked about, these are called mechanical waves. 现在,我们刚才谈到的一切都被称为机械波。 |
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