1) digital frequency sounding tool
数字频测仪
2) High speed frequency digital visualizer
高频数字观测仪
3) digital frequency characteristic testing instrument
数字频率特性测试仪
1.
Application of DDS in digital frequency characteristic testing instrument;
DDS在数字频率特性测试仪中的应用
4) digital frequency measurement
数字测频
1.
In order to break through the limitation of Electronic analog-to-digital converter in speed and time-delay precision,a wideband digital frequency measurement method based on optical sub-sampling is proposed.
为了突破高速电模数转换器采样速率和时延控制精度对测频带宽的限制,文中提出了一种采用光脉冲欠采样的超宽带、高分辨率数字测频方法。
2.
The method gets skip position of frequency by digital frequency measurement, thus realize the demodulation for PCM/DPSK signal according to the regulation of modulation of the signal.
通过数字测频算法,获取 PCM/DPSK 信号频率突变点,根据 DPSK 调制原理,实现 PCM/DPSK信号的解调;详细介绍了此种解调方法的基本原理及实现过程,分析了解调过程中多普勒频率对解调结果的影响。
3.
In a hydropower station, its computer-aided speed governor adopted a digital frequency measurement and phase monitoring circuit with easy and convenient operation and high measurement accuracy.
某水电站微机调速器采用既简单方便、测量精度又高 的数字测频鉴相电路,具有自动跟踪功能,在实际应用中效果较好。
5) digital spectrometer
数字频谱仪
6) digital clinometer
数字测斜仪
补充资料：仪数
1.礼仪规定的等级。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条