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- The excursion of instantaneous frequency representation will be resulted when EFT is applied to signals with rapidly varying frequency contents. 对于具有恒定幅度的调频信号而言，瞬时频率代表了其全部的信息，可以据此对信号进行识别和分类。
- 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。
- varying frequency speed controller 变频器
- varying frequency speed controner 变频器
- varying frequency speed regulating 变频调速
- This paper introduces the system of single phase large power source varied frequency for heating,contains rectifier,filter,inverter and control circuit etc. 介绍了大功率单相变频加热电源的系统组成，包括整流、滤波、逆变和控制电路等部分。
- This includes brain rhythms, heartbeat, muscle tension, mental and emotional rhythms, hormonal and enzymatic rhythms, sleep and wakefulness, all with varying frequencies and intensities. 这些规律包括脑波的规律，心跳，神经和感情的规律，统一以及酶化的规律，睡眠以及清醒，所有的状态和紧张。
- The Varying Frequency Speed Modulating Burden System for Nuclear Scaler 核子秤变频调速配料系统
- The Active Current Control of Varying Frequency Speed Control System 变频调速系统的有功电流控制方法
- He varied the transmission frequency. 他变换了无线电传送的频率。
- A nobleman of varying status or rank. 贵族各种爵位或地位的贵族
- 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。
- A varying unit of weight or money used in ancient Greece and Asia. 迈纳古希腊及亚洲使用的一种不断变化的重量或货币单位
- varied frequency speed regulating 变频调速
- Vary frequency adjustable speed of high voltage 高压变频调速
- 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。
- Maise, millet and kaoliang adapt readily to varying natural conditions. 玉米、小米和高粱较易适应不同的自然条件。
- The varying angles of roof slope. 屋顶斜面多种多样的角。
