查询词典 difference frequency

frequency variation method：变频法

frequency tripler 三倍频器 | frequency variation method 变频法 | frequency window function 频率窗函数

very high frequency direction-finding：甚高频测向

very high frequency direction finder 甚高频测向仪 | very high frequency direction finding 甚高频测向 | very high frequency direction-finding 甚高频测向

Very High Frequency Communication：甚高频通信

very high frequency aural omnirange 甚高频可听式全方位无线电信标 | Very High Frequency Communication 甚高频通信 | very high frequency direction finder 甚高频测向仪

very high frequency transmitter：甚高频发射机

very high frequency signal generator 甚高频信号发生器 | very high frequency transmitter 甚高频发射机 | very high frequency vacuum tube voltmeter 甚高频电子管伏特表

very high frequency jammer：甚高频人为干扰发射机

very high frequency circuit 甚高频电路 | very high frequency jammer 甚高频人为干扰发射机 | very high frequency omnidirectional range 甚高频全向无线电指向标

high frequency bombarder：高频轰击器

高频放大器 high frequency amplifier | 高频轰击器 high frequency bombarder | 高频电容 high frequency capacitance

high frequency impedance cardiographic examination：心脏高频阻抗图检查

high frequency heating 高频加热 | high frequency impedance cardiographic examination 心脏高频阻抗图检查 | high frequency impulse electro-erosion machine 高频脉冲电蚀机床

FH frequency hopped：跳频

FH-SS frequency hopped spread spectrum 跳频扩频 | FH frequency hopped 跳频 | FSK frequency shift keying 移频键控

Lockpin Frequency Modulation：有线电视安全监控系统

线性调频连续波:Linear Frequency Modulation Continuous Wave | 有线电视安全监控系统:Lockpin Frequency Modulation | 脉冲宽度频率调制:Pulse Width and Frequency Modulation

low-frequency padder：低频微调电容器

low-frequency oscillograph 低频示波器 | low-frequency padder 低频微调电容器 | low-frequency power amplifier 低频功率放大器

steam trap valve：疏水阀

球阀 ball valve | 疏水阀 steam trap valve | 蛇管式换热器 serpentine type heat exchanger

aldermanship：市政官

aldermanry 议员 | aldermanship 市政官 | Alderney 乳牛