时差法 meaning in Chinese
tofd
Examples
- Improvement on transit - time ultrasonic flowmeter
时差法超声流量计的改进 - The methods of direction finding mainly include maximum ( minimum ) signal method , amplitude - comparison method , phase - comparison method and time difference method
测向的方法主要有最大(最小)信号法、比幅法、比相法、时差法。 - The methods of direct measurement with low precision such as frequency and time interval methods and the methods of indirect measurement with high precision such as beat frequency method , dual mixer time difference method and frequency difference multiplying method are supported on the platform . the fundamentals of each method are studied . the quantization error is analysed and the illustration is given for each method
该平台支持直接频率和时差法两种较低精度的测量方法以及双混频时差法、差拍频率法和频差倍增法高精度的简接测量方法，本文研究了各种测量方法的原理，对各种测量方法的量化误差作了分析，并给出具体的实例。 - According to the high dispersedness and low precision of measurements when using the traditional time difference method in small diameter and low flow rates conditon , this paper brings forward a new method based on high - speed data acquisition technique . the time difference comes out accurately with high resolving ability of time by using the method and the signal processing algorithms . the developed ultrasonic detection system is composed of two ultrasonic detectors , a transmitting and receiving ultrasonic unit , a high - speed data acquisition unit and a computer
本文针对传统的时差法在小管径、低流速测量时,具有测时结果分散性大、测量精度受计数频率的影响大等不足,创造性地把高速数据采集技术应用在超声波流量、压力测量上,用信号处理算法求时差,使时差成为一个统计量,有效地克服了超声波传统时差法测量精度差、不能测量小管径、低流速流体流量的缺点,提高了时差测量的分辨率和精度。