频率计

sonic frequency cymometer

声频频率计

sonic frequency controlling amplifier 声频控制放大器 | sonic frequency cymometer 声频频率计 | sonic frequency spectrum recording meter 声频频谱记录仪

frequency measuring equipment

频率计

frequency measuring count-er 测频计数器 | frequency measuring equipment 频率计 | frequency measuring relay 测频继电器

counting ratemeter

计算速度测定器 脉冲频率计

counting-ratemeasuringcircuit 计数率测量电路 | counting-ratemeter 计算速度测定器 脉冲频率计 | counting-rateversusvoltagecharacteristic 计数率-电压特性

resonant frequency meter

谐振频率计

谐振萤光 resonant fluorescence | 谐振频率计 resonant frequency meter | 谐振振荡系统 resonant oscillatory system

sonometer

振动式频率计

sonogram 声谱记录 | sonograph 声谱记录 | sonometer 振动式频率计

electrionic frequency meter frecuencimetro electronico

电子频率计

91 电子仪器 electronic device apara electronico | 92 电子频率计 electrionic frequency meter frecuencimetro electronico | 93 电子邮件 electronic mail electro-mail

frequency indicator

示频器, 频率计

operational procedure 操作程序, 运行程序 | frequency indicator 示频器, 频率计 | groundnut sheller 花生脱壳机 花生豆去皮机

digital frequency meter

数字频率计

digital fluorography apparatus 数字频光X射线摄影装置 | digital frequency meter 数字频率计 | digital holder 数字保持器

digital frequency meter

数字式频率计

digital filter 数字滤波器 | digital frequency meter 数字式频率计 | digital indicator 数字指示器

audio frequency meter

音频频率计

audio frequency generator 音频发生器 | audio frequency meter 音频频率计 | audio frequency peak limiter 音频峰值限幅器

photoperiodic response：光周期响应

photoperiodic induction 光周期诱导 | photoperiodic response 光周期响应 | photoperiodism 光期性

Multi-Variate Statistical Analysis：多元统计剖析

311. 多项距阵 Multi-Nominal Matrix | 312. 多元统计剖析 Multi-Variate Statistical Analysis | 313. 发电厂 Power Plant