该系统以空气中超声波的传播速度为确定条件，利用反射超声波测量待测距离。
The system could measure certain distance on the premise that the speed of reflected wave in the air is fixed.
该设计是以空气中超声波的传播速度为确定条件，利用超声波反射时间为参数来测量待测距离。
The design is based on the velocity of the air ultrasound to determine the conditions for the use of ultrasound reflection time parameters to measure the unknown distance.
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。
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.
当然，超声波很早就已用于医疗成像，其应用的依据是声波在密度更大的组织中传播速度更快。
Ultrasound has, of course, long been used in medical imaging. It relies on the fact that sound travels faster through denser tissues.
介绍了声学测温的基本原理，推导了声波传播速度与介质温度的关系式，阐述了声学测温的巨大优势和存在问题。
The main principle is introduced, and the relationship between speed of sonic wave and media temperature is deduced. The great merits and existing questions of acoustic pyrometry are shown.
研究表明，声波在同一介质中的传播速度和波源的速度无关。
According to certain research, the spread velocity of sound waves has nothing to do with the speed of the ripples.
分析了空气中超声波测距原理，提出了通过温度测量修正超声波传播速度，提高空气中测量精度的方法。
The principle of ultrasonic measuring distance in the air was analyzed. A method of improving the measurement precision by correcting transmission speed with inspecting temperature was put forward.
基于声波具有非常稳定的传播速度这一特点，提出了一种利用非线性变换手段压制强声波干扰的方法。
So, the suppression method of applying non-linear transform on strong acoustic interference was proposed based on the characteristics of steady velocity.
通过测量超声波在固体介质中传播的纵波传播速度，进一步测量该固体的杨氏模量，得到了测量固体杨氏模量的一种新方法。
Solid Youngs modulus is determined by measuring the propagation speed of longitudinal wave induced by ultrasonic wave in solid media.
测量的航速、航程与船舶实际的航速、航程存在的误差，主要是由于超声波在水中的传播速度发生变化引起的，误差相对较小。
Measuring the speed, range and the actual speed of the ship, the range of error was mainly due to the spread of ultrasound in the water caused by the change in speed, the error is relatively small.
通过测量超声波在固体介质中传播的纵波传播速度，进一步测量该固体的杨氏模量，得到了测量固体杨氏模量的一种新方法。
Solid Young's modulus is determined by measuring the propagation speed of longitudinal wave induced by ultrasonic wave in solid media.
通过声波在气液两相流中传播速度试验证明，武德近似公式可以用来计算声波在该两相流中的传播速度。
The testing of transmission speed of sonic wave in the gas-liquid two-phase flow indicates that Wood formula can be used to calculate the transmission speed of sonic wave in the two-phase flow.
通过声波在气液两相流中传播速度试验证明，武德近似公式可以用来计算声波在该两相流中的传播速度。
The testing of transmission speed of sonic wave in the gas-liquid two-phase flow indicates that Wood formula can be used to calculate the transmission speed of sonic wave in the two-phase flow.
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