frequency modulation[电子] [通信] 频率调制;调频;调频广播;频率灯
angular frequency[物] 角频率;角频;波长精确度;角频〔率
frequency band[物] 频带;[物] 频段;频率范围;频率带
intermediate frequency[物] 中频;中间频率;中频频率;中高频中间频率中频
relative frequency[数] 相对频数;相对次数;相对频度
normalized frequency标准化频率;归一化频率;化频率
oscillation frequency[电子] [数] 振荡频率;振荡周率;振动频率;暂载频
frequency synthesizer[电子] 频率合成器;频率综合器;综合器;合成器
power frequency工频;[电] 电源频率
The frequency calculation is the core of the device.
其中,频率计算是本装置的核心部分。
参考来源 - 低频减载装置研究Wavelet analysis is the widely used time-frequency tool.
小波分析是目前国际上最新的也是应用最广泛的时间-频率分析工具。
Through vibration frequency spectrum analysis of no-tillage seeder in field, its vibration characteristics were obtained.
通过对播种机的田间振动频谱分析，得到了它的的振动特征。
As the frequency and the semantic feature of the words are combined, the quality of clustering is improved.
词的频度和语义特征相结合后,提高了文本聚类的性能。
参考来源 - 基于边界距离的文本聚类方法研究Methods: A hospital-based frequency matched case-control study was conducted.
方法:采用以医院为基础的频数匹配病例对照研究方法。
The frequency of symptom and sign in lower limb DVT was 27.5%.3.
下肢DVT症状和体征发生率为27.5%。
参考来源 - 肺动脉栓塞症40例临床分析In addition, the figures of locust plague frequency of the three subspecies of migratory locusts were drawn on 100-year scale.
此外,还绘制了历代三大飞蝗灾害发生的百年频次图。
参考来源 - 历史时期中国蝗灾记录特征及其环境意义集成研究Study on the detection of the frequency-shift in both the time domain and the frequency domain is provided in this paper.
本文从时域和频域两个方面对移频信号的检测进行研究。
参考来源 - 移频信号检测方法的研究与应用The theory coming from classical frequency domain can resolve the problem of robust, but it has a bad performance in multiple I/O systems. So we give the method of the H_∞loop shaping to design the controller.
经典频域设计理论能够解决系统的鲁棒性问题,却不能很好的应用于多输入多输出系统,因此,本文选用了H_∞回路成形法来设计控制器。
参考来源 - 四旋翼直升机控制问题研究The step frequency of hurdle race athletes is faster than that of sprint and long jump athletes and there are very significant difference(P<0.01).
步频上,跨栏运动员快于短跑和跳远运动员,存在非常显著差异(P<0.01)。
参考来源 - 上海市男子跨栏运动员初选阶段的形态、生理机能与素质特征研究Subjects tended to select word that they had learned before. The frequency of word had significant influence on preference, preference effect was larger when the words were high frequency.
实验一(A)在消极启动情况下对词频与偏好效应的关系进行了测量，实验结果发现，汉语识别中存在偏好效应，被试倾向于选择先前学习过的项目；偏好效应受词频变化的影响，在高频词时有更大的偏好效应。
参考来源 - 汉语短时识别中的偏好效应N-UNCOUNT（不可数名词） The frequency of an event is the number of times it happens during a particular period. 频率
The frequency of Kara's phone calls increased rapidly.
卡拉打电话的频率迅速增加。
N-VAR（有变体名词） In physics, the frequency of a sound wave or a radio wave is the number of times it vibrates within a specified period of time. (物理学) 频率
You can't hear waves of such a high frequency.
你听不到这么高频率的声波。