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- Frequency comparison pilot series for the FDM systems in the toll communication network 长途通信网频分制系统频率比较导频系列
- frequency comparison pilot 频率比较指示
- Besides, a new PFD architecture that can finish phase and frequency comparison and adjustment in one reference cycle is also presented. 此外，我们也提出了一个新的相位频率侦测器，它可以在一个参考时脉周期内，完成频率和相位的比较，并且能进一步调整振荡器的振荡频率。
- NEW PHASE COMPARISON PILOT PROTECTION BASED ON NON-POWER FREQUENCY CURRENT 基于复小波的快速相差保护研究
- directional comparison pilot protection 方向纵联保护
- Influence of open-phase running on directional comparison pilot protection 非全相运行对方向高频保护的影响
- Study on Phase Comparison Pilot Protection for Six-phase Transmission Lines 六相输电线路的相差纵联保护研究
- Directional Comparison Pilot Protection for Six-phase Transmission Lines 六相输电线路的纵联方向保护方案
- He varied the transmission frequency. 他变换了无线电传送的频率。
- A unit of frequency equal to one cycle per second. 赫兹频率的单位，等于每秒一周
- Fatal accidents have decreased in frequency over recent years. 近年来死亡事故发生的频率已经下降。
- Auto - meassurement Set Based on Single Chip Processor Add on TV Colour Subcarrier Frequency Comparison Equipment 基于单片机的彩色电视副载波校频仪附加自动测试装置
- We can often correlate age with frequency of illness. 年龄的大小往往与发病率有关。
- Accidents on that highway are happening with increasing frequency. 那条高速公路上车祸发生得越来越频繁。
- He tuned his radio to the police frequency. 他把无线电调到警方的频率。
- He manipulated the frequency dial of the radio. 他开始调拨频率键盘。
- The pitch depends on the frequency. 音调的高低是由频率决定的。
- The resulting frequency varies by a few percent. 最终频率有少许变动。
- I am majored in audio frequency amplifier. 我主修音频放大器。
- Small dissipation factor at high frequency. 高的频率和小的损耗因素.
