| 1. | This wave of excess density is sound .
这种过剩密度的波就是声波。 |
| 2. | The acoustic window is approximately 1 in square .
声波干扰带约为1英。 |
| 3. | Long sonication periods can lead to some inactivation .
长时间的声波作用可导致某种程度的失活。 |
| 4. | The sound waves from the plane can speed on ahead of the plane .
来自飞机的声波能跑到飞机的前面。 |
| 5. | Different notes have different distances between the tops of the waves .
音调不同，声波波峰之间的距离也不同。 |
| 6. | Suppose the speakers both emit a pure sinusoidal sound wave of constant frequency .
假定两个扬声器都发射恒定频率的纯正弦声波。 |
| 7. | The disturbance is sound wave, conforming to the laws of acoustic propagation in solids .
这种扰动是种声波，它遵从在固体中声波的传播规律。 |
| 8. | The nature of the wave motion in sound can be made clear by considering the tuning fork .
对于音叉的考查可以使我们清楚地理解声波波动的本质。 |
| 9. | This might be compared with the jumble of wavelengths of sound that go to make up ordinary noise .
这种现象可以与合在一起构成普通噪音的声波波长的混杂情况相比。 |
| 10. | It is important to recall that a sound wave in a nonhomogeneously deformed material cannot be a plane wave .
重要的是要记得，非均匀变形材料中的声波不可能是平面波。 |
