1.
In terms of pitch, bats produce echolocation calls with both constant frequencies and varying frequencies that are frequently modulated.
关于音调，蝙蝠用恒定频率和频繁调整的变化频率发出回声定位的叫声。
2.
An Analysis on the Change Frequency and Consequences of the Names of Professional Football Clubs in Our Country
我国职业足球俱乐部名称变化频率及后果分析
3.
Instantaneous frequency rate estimation of multicomponent two-dimensional chirp signals
多分量二维线性调频信号瞬时频率变化率估计
4.
Influence of Interaction Time on Frequency Shift Quantity of Frequency Change in Photonic Crystal
光子晶体频率变换中作用时间对频率变化量的影响分析
5.
The lowest frequency of a periodically varying quantity or of a vibrating system.
基频周期变化量或振动系统的最低频率
6.
Frequency Conversion Based on Periodically Poled Lithium Niobate Waveguide;
周期极化铌酸锂波导的频率变换研究
7.
A Research on Measurement Technique of Frequency Rate in the Single Observer Passive Location System;
单站无源定位中频率变化率测量技术研究
8.
Research of Passive Location on the Basis of Doppler Changing Rate;
基于多普勒频率变化率的无源定位技术研究
9.
Optimization and control of induction machine's efficiency and power factor based on VVCF
变压恒频感应电机效率功率因数优化控制
10.
The vibration is varied in frequency over a range on the order of 5 to 2,00 0 cps, usually at a constant octave.
振动的频率在5到2000赫的范围内变化，通常用一常值的八阶变化率。
11.
permeability-frequency convertor
导磁率－频率变换器
12.
The Entanglement of Two Atoms in a Coherent Field of Time-Varying Frequenry
频率变化的相干态光场中两原子纠缠演化
13.
Electromyography Mean Power Frequency Alternations during Rapid Transition of Elbow Flexion to Extension
主动肌和拮抗肌功能转变瞬间的肌电平均功率频率变化
14.
The frequency inverters has a function of variable voltage and variable frequency.
频率逆变器具有变压、变频功能。
15.
This frequency range is normally between 5 and 8 cycles a second.
频率通常在每秒5周至每秒8周之间变化。
16.
Having the excellent electrical performances, low losses and a capacitance of a slight variation with both temperature and frequency.
电性能优良，损耗小，电容量随温度和频率变化小。
17.
A Novel Frequency-characteristic-varying Model and It s Applications;
时间域光学系统频率特性变化的设想与应用
18.
The ω Variation in Moments of Inertia for Normally Deformed Hand ~(171)Yb[521]1/2 in Rare-earth Odd-A Nuclei;
奇A核~(171)Yb的[521]1/2带转动惯量随角频率的变化