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- echo signal of sounder signal 测深仪回波信号
- Radio frequency simulation system(RFSS) is mainly used to simulate echo signal of radio frequency target in laboratory. 射频仿真系统(RFSS)主要是用在实验室里模拟空中射频目标信号。
- In LFMCW radars,the echo signal of moving target with acceleration has Doppler aberration which will cause the detection performance and parameter estimation loss of target. 在线性调频连续波(LFMCW)雷达中,加速度运动目标回波存在多普勒频谱畸变现象,造成目标检测性能和参数估计精度损失。
- For problems exist when processing echo signal of ultrasonic distance measuring system,two new ways of echo signal processing to improve measure precision are proposed. 在分析超声波测距系统回波信号处理存在问题的基础上,提出了两种提高测量精度的回波信号处理方法。
- Applicable to transmission of sound signal in sound rngineering.It is used as cord connecting to microphone. 适用于在音响工程中传输音频信号,作为连接话筒用软线。
- A high-speed sampling system for echo signal of impulse GPR based on equivalent time sampling method is presented, and significant circuits including step sampling pulse generator and sampling gate circuit are designed. 摘要提出了一种基于等效时间采样方法的冲击型探地雷达回波信号高速采样系统，设计实现了等效时间采样的关键电路，包括步进采样脉冲发生器、采样门电路。
- If the tonometer is hold with its tip downwards not strictly vertically, an interrupted sound signal of the tonometer position indicator turns on. 如果所持眼压仪尖向下未完全垂直，眼压仪位置指示器开启一断续声音信号。
- A red light is usually a signal of danger. 红灯通常是危险的信号。
- SHD-A model transmitter is applied to emit and convey baseband signal of sound, vibration and measure-control in aeronautical communication system from one point to mul-ti-point. SHD-A型多通道固态调频发射机系统主要应用于航空通信系统一点对多点的声音、振动、测控等基带信号的发射与传输.
- echo signal of acoustic scattering 声散射回波信号
- A device used underwater to produce pulses of sound, as for an echo sounder. 声脉冲发送器置于水下产生声脉冲的装置，如回音器中的装置
- STUDY OF ECHO THRESHOLD FOR DIFFERENT KINDS OF SOUND SIGNALS 不同类型声信号的衰减延迟与回声阈的研究
- When did the first measurement of the speed of sound take? 第一次测量声速是在什么时候？
- The Detection of Blade Echo Signal of Hovering Helicopter 悬停直升机目标旋翼回波信号的多通道检测方法
- Background noise can destroy the intrinsic acoustical characteristic and model parameter of sound signals, so that deteriorates the communication quality of sound. 背景噪声破坏了语音信号原有的声学特征和模型参数，降低语音通信质量。
- Is this announcement the signal of better times ahead? 宣布的这件事是否预示往後日子越过越好了？
- Every paragraph is a distillation of sound judgment. 每段话都是正确判断的结晶。
- Experts regarded it as a warning signal of an economic smashup. 专家们把它看作是一场经济灾难的警告信号。
- Our teacher has mutation of sounds suddenly. 我们的老师突然语音发生了变化。
- Airliners in service at present cannot fly faster than the speed of sound. 目前供使用的客运机飞行速度不能超过音速。
