1.
The frequent incidents over the past month have highlighted the danger of loose and corroded aluminium window frames.
意外频频发生，突显铝窗松脱和侵蚀的危险。
2.
The angular frequency of the disturbing force called the impressed frequency.
扰动力的角频率称为外加频率。
3.
external fixed rate pacemaker
体外固定频率起搏器
4.
gold-epitaxial silicon high-frequency diode
金-外延硅高频二极管
5.
sweep frequency heterodyne-type analyzer
扫描频率外差式分析器
6.
single conversion superheterodyne
一次变频超外差接收机
7.
double superheterodyne receiver
双变频超外差接收机
8.
dual-conversion superheterodyne receiver
双变频超外差式接收机
9.
triple superheterodyne
三次变频超外差接收机
10.
No frequency other than the driving frequency will satisfy the equation of motion.
除策动频率外，没有一个频率能够满足运动方程。
11.
The Doppler frequency can be obtained as a heterodyne or beat effect.
由于外差或频差效应，能够得到多普勒频率。
12.
Study on RF Front-end for Infrared Video Wireless Spread Spectrum Transmission System;
红外图像无线扩频传输射频前端的研制
13.
Achievement and Application of External Frequency Converter Control on Lower Inverter;
低档变频器频率外控功能的实现与应用
14.
Continuous-wave Single-frequency 780nm Laser Source Generated from External-cavity Frequency Doubler with PPLN Crystal
利用PPLN晶体外腔倍频产生780nm连续单频激光光源
15.
extrapolated unity-gain frequency
外推单位增益频率-线性放大器
16.
It does net work with frequency-hopping or infrared transmissions.
不能用跳频或红外线传输方式工作。
17.
Stable Second Harmonic Generated 461nm Blue Radiation Using an External Ring Cavity;
用环形外腔倍频获得稳定461nm激光
18.
Research on Video Image Processing in System for Monitoring Vehicle s Outside Environment;
汽车外况监测系统视频图像处理研究