回声测深 [测] echo sounding ; acoustic sounding ; acoustical depth sounding ; echo depth sounding
噪声测量 [声] noise measurement
超声测厚仪 Ultrasonic thickness gauge ; ultrasonic pachymeter
回声测深器 [测] echo sounder ; sonic echo sounder ; sonic echo depth finder
水声测量 underwater acoustic measurement ; underwater sound measurement ; acoustic survey
噪声测量仪 noise measuring instrument ; noise measuring meter ; noise measuring set
噪声测井 borehole audio tracer survey ; noise logging
声测距仪 acoustic ranger ; acoustical ranger
噪声测试器 noise meter
回声测距 [测] echo ranging ; echo-ranging detection
研究了基于时延估计的低空目标声测无源定位理论与算法。
The theory and algorithm for low altitude target localization based on time delay estimation (TDE) is studied.
混凝土灌注桩用钢薄壁声测管是一种较新的声测管材，其连接方法目前没有统一的形式。
As a newly used material, steel thin-walled sonic-testing tubes used for the cast-in-situ piles have not a unified form of connecting.
在设计中，针对故障的不同形式，研究了声测法、脉冲磁场法、音频感应法等各种方法的原理。
In the design, in view of the breakdown different form, has studied the sound detection law, the pulse magnetic field law, the audio frequency induction method and so on each method principle.
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