It is shown that acousticvelocity of tap water is faster than that of the polymer solution.
实验结果表明，水中的声传播速度大于聚合物溶液中的声传播速度。
2
The latter has high coupling coefficient, low acousticvelocity and excellent temperature stability.
后者具有高的耦合系数，低的声速，好的温度稳定性。
3
If the sediment underlying a hydrate entraps natural gas, its acousticvelocity will become much lower, resulting in vivid characteristics of reflections.