您要查找的是不是：
- 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。
- 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。
- Uses packet switching protocol based on frequency hop scheme with 1600 hops/s to enable high performance in noisy radio environments . 在无线电噪声环境里，利用基于每秒1600跳跳频表的分组交换协议可以提高系统性能。
- 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.
- Spread the palpitate frequency love till ending. 循着心跳的频率爱到永不分离。
- Wave speed equals frequency times wavelength. 波速等于频率乘以波长。
- As she moved up in frequency, her ascension began. 当她频率增加时，她的提升也就开始。
- Fast frequency hopping avoids interference. 快速跳频避免干扰。
- It is required that the length of each hop is at least 80 symbols to achieve effective timing error and frequency offset estimation as to demodulate the signal without any delay. 仿真结果表明每跳要传输80比特以上，才能够完成位定时与载波同步并实时解调。
- Simulation results show that the method can unravel multiple FH signals in the presence of collisions and unknown hop rates, frequency offsets, and hop patterns. 仿真实验表明，该算法可以在未知跳频速率、频率偏移以及跳频图案等参数的情况下拆分多个发生频率冲突的跳频信号，避免相互干扰。
- He wrote to both with tolerable frequency. 他和他们通信，相当频繁。
- A frequency of one million megahertz,10000?200Hz. 一百万兆赫(兹)频率，即10000?200赫(兹)。
