1) different frequency technique
频率参差技术
2) frequency staggering
频率参差
4) heterodyne mixing technique
外差混频技术
1.
Photonic RF phase shifters based on OTTD(optical true time delay),heterodyne mixing technique and vector sum technique were introduced.
介绍了基于光实时延迟线、基于外差混频技术和基于矢量和技术的光子射频移相器,对其工作原理和技术特点作了分析。
5) stagger frequency difference
参差频差
6) frequency scanning technique
频率扫描技术
1.
Research of crack depth detection method based on frequency scanning technique;
基于频率扫描技术的裂纹深度检测方法研究
2.
After introducing some familiar methods of crack depth detection,frequency scanning technique was applied to alternative current field measurement.
本文在介绍了几种常用的裂纹深度检测方法的基础上,将频率扫描技术应用到交变磁场测量中,以垂直工件表面的磁场强度与总磁场强度的比值作为特征值,实现对缺陷深度的检测。
补充资料：频率计量(见时间频率计量)
频率计量(见时间频率计量)
frequency metrology: see time and frequency metrology
口n IQ liliang顷率频率计皿(f比quency metrolo盯) 计t。见时闰
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条