pulse echo中文什么意思

例句与用法

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1. The wavelet ' s characteristic of focus " varieties make wavelet better analyses ability in the time field and the frequency field . it is a perfect method of analyzing non - steady signal , and it is fit to analysis ultrasonic pulse echo signal
   而小波的“变焦距”特性使得小波分析在时域和频域中都具有良好的分析能力，是一种理想的分析非稳态信号的途径，适于对超声脉冲回波信号的分析。
2. Therefore , it is necessary for guaranteeing the quality of steel plate to detect and repair the roll profile timely and exactly . this paper presents the sonic circulation and multi - pulse echo principle and designs roll profile ultrasonic measurement system based on the analysis of 3d surface measurement technology and roll profile measurement methods
   本文在分析了三维面型检测的发展现状及目前辊型的检测方法的基础上，提出了声循环多次脉冲反射测量原理，并以此为基础设计了上位机化的超声波辊型测量系统。