声速也同样，取决于杨氏模量。

The speed of sound also depends on Young's modulus.

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若杨氏模量很低，物质更有弹性。

If Young's modulus is very low, the material is more elastic.

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如果是尼龙做的，它的杨氏模量。

If you make it out of nylon, which has a Young's modulus...

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如果杨氏模量很大，表示这棒子非常硬。

If Young's modulus is very high, then the rod is extremely stiff.

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我们对付的是杨氏模量。

We dealt with Young's modulus.

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这是杨氏模量。

So this is Young's modulus.

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这是杨氏模量。

So this is Young's modulus.

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