本文通过对低频主动声纳的主动声纳方程的分析与声学探测过程的仿真，初步研究了低频主动声纳在不同距离上的最优探测频率问题。
With analyzing the detecting procedure of Low-frequency active sonar and emulating about it, the Optimum Detection frequency Band of Low-frequency active sonar were researched.
军事研究员们正在试图将声学枪响探测器与一条耀眼的激光相结合，以惊吓将美国直升机作为目标的射手。
Military researchers are looking to combine an acoustic gunshot detector with a dazzling laser that will startle shooters who take aim at American helos.
利用声学原理探测中微子的一个优势就是：与光相比，声音在水或冰中更容易传播。
One advantage of acoustic detection is that sound travels rather better in water and ice than light does.
随着水声探测潜艇的手段和方法以及带有声制导的水下武器的不断完善，对潜艇的声学性能的要求越来越高。
With the progressive development of underwater acoustic detection and acoustic-guided weapons, more advanced requirements are imposed upon the acoustic properties of submarines.
波恩的科学家已经解开了这个谜底：肉眼往往区分不出水果的成熟度，但通过水果释放出的乙烯，从声学角度探测，就能做到这一点。
The scientists in Bonn have solved this mystery: differences in ripeness are often invisible, but can be detected acoustically in the form of ethylene.
用声学设备探测水体中悬浮泥沙浓度及其变化的关键问题是对观测数据进行标定。
The key to the problem of probing the concentration of suspended sediment in water and its variation with acoustic equipment is how to calibrate the obtained data.
文章分析了心理声学模型有效的掩蔽特性，主要介绍了心理声学模型的改进音调探测方法，并给出了其实验结果。
This paper analyzes the masking characteristics of the psycho-acoustic model, concentrates on the modified tonality detection algorithm, and presents experimental results.
从波动声学的角度讨论声波测井的探测深度问题。
Based on acoustics, one can study the testing depth of sonic logging.
声学泥沙浓度剖面测绘仪在杭州西湖淤泥探测中得到成功应用。
ACP 1 (Acoustic Concentration Profiler) has been success fully applied to sediment observations in West lake .
在油气资源勘探和地球科学探测中广泛采用声学测井技术。
Acoustic logging is a general method in oil and gas exploration.
在油气资源勘探和地球科学探测中广泛采用声学测井技术。
Acoustic logging is a general method in oil and gas exploration.
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