underwater acoustic measuring instrument 水声测量仪
acoustic measuring system 声学测量系统 ; 声测量系统
acoustic measuring unit 声学测量单元
acoustic measuring instrument [声] 声学测量仪表
acoustic measuring boreholes arrangement 声波测孔
acoustic measuring array 水声测控基阵
acoustic frequency measuring instrument 声频测量仪器
acoustic c frequency measuring instrument 声频测量仪器
acoustic mode measuring 声模态测量
acoustic wind-measuring 声学测风法
Echo Sounder is a kind of acoustic measuring depth equipment, which can measure depth with the time between transmitted wave and echo on condition in which the speed of ultrasonic is fixed.
回声测深仪是用来测量水深的一种声学测量设备，其以水中超声波的传播速度为确定条件，利用发射波与反射回波时间差来测量水深。
These so-called baryon acoustic oscillations offer another yardstick for measuring the expansion rate of the universe over time and putting limits on the value of dark energy.
这些被称为重子声学振荡的东西为测量随时间变化的宇宙的膨胀速度和对暗能量的值施加限制提供另一尺码。
The stress in ferromagnetic materials was studied by measuring the change of the amplitude of ultrasonic wave with electromagnetic acoustic transducers.
本文主要是对用电磁声换能器，通过测量超声波幅度变化来测量铁磁性材料内部应力的方法进行实验研究。
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