1. Results The fundamental frequency and bass were lower in diseased group. The percentage of jitter increased and the percentage of fundamental frequency decreased with severity. 结果试验组的基频和低音明显降低，随室带肥厚程度的加重，微扰百分值的检出率有增高的倾向，而基频和低音频率则有下降的倾向。
2. A form of frequency modulation in which the carrier frequency is shifted between a mark frequency and a space frequency in response to the impressed intelligence signal ( frequency-shift keying ). 一种方式，其中载波频率在标志频率和场频率之间移动，以响应外加的情报（数据）信号。
3. A form of frequency modulation in which the carrier frequency is shifted between a mark frequency and a space frequency in response to the impressed intelligence signal ( frequency-shift keying ). 频率调制的一种方式，其中载波频率在标志频率和场频率之间移动，以响应外加的情报（数据）信号。
4. The above frequency chart depicts the " fundamental", not the "main" frequency which is more audible to the human ears and more detectable for frequency analyzers. 就是说测出来的音高，不代表就是唱者的基音？所以泛音高过基音的时候是常有的？
5. If the carrier frequency by changing the method to send binary symbols, is the frequency shift keying (FSK) method, when the "1" when there is low frequency, "0" when there is a high frequency. 如果用改变载波频率的方法来传送二进制符号，就是频移键控（FSK）的方法，当“1”出现时是低频，“0”出现时是高频。
网络释义
fundamental frequency magnetic modulator 基频磁调制器;
fundamental frequency magnetic modulator 基频磁调制器;
Fundamental Frequency Vibration 基频振动;
vibration at fundamental frequency 基频振动;
Fundamental frequency 基频;
基本频率;
基频率;
基[本]频[率],最低频率,一阶频率;
