direct frequency measuring method 直接测频法
variable gate frequency measuring method 变闸门测频法
High precision frequency measuring method 高精度测频法
high-frequency power measuring method [电磁] 高频功率测量法
frequency-sweep measuring method 扫频测量法
measuring frequency method 测量方法
high-frequency analytical measuring method [电子] 高频分析测量法
The filter processes input discrete sampling signal to recover continuous signal and suppress harmonic noise, and the zero-crossing frequency measuring method is improved.
该滤波器通过处理输入离散采样信号获得连续信号并抑制谐波噪声，改进了过零测频方法。
A method for direct measuring the frequency of a free electron laser using AC Josephson effect is presented.
提出一种利用交流约瑟夫森效应直接测量自由电子激光频率的方法。
Measurement for rotative velocity of full-closed compressor by the method of measuring vibration frequency is discussed.
讨论了用测量振动频率的方法对全封闭式压缩机进行转速的测量。
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