To get high quality quartz tuning forks, mechanical coupling error and frequency excursion by machining errors must be resolved.
加工高质量的石英音叉需要解决工艺误差导致的机械耦合误差及频率漂移等问题。
2
The capacitor coupling circuits are applied in the highfrequency circuit. It concern the coupling coefficient that the resonance property and frequency property.
在高频电路中，有时用到电容耦合回路，其调谐特性和频率特性与耦合系数直接相关。
3
At present, proximity highfrequency RFID (Radio frequency Identification) system based on inductive coupling load modulated technology is used worldwide.