1·If the sediment underlying a hydrate entraps natural gas, its acoustic velocity will become much lower, resulting in vivid characteristics of reflections.
若水合物下方的沉积物捕集了天然气，其声速会更低，由此产生的反射波具有鲜明的特点。
2·The latter has high coupling coefficient, low acoustic velocity 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·Based on the acoustic wave sounding of the dam foundation of a water control project, the continuous ratio of J1~J4 inter layer shear zone is infered by analyzing the acoustic velocity anomaly.
以某水利枢纽工程坝基声波探测为例 ，通过声速异常分析 ，对J1～J4 层间剪切带连续率进行了推定 ，其部分成果经开挖验证具有一定的可靠性。