中频不稳定性的研究经历了极为曲折的道路.Intermediate frequency instability has had the most uneven history.在模拟系统中通常是由中频信号的失真所引起.Typically caused by mid frequency distortions in an analog system.中频电源已广泛应用于工业加热领域.Medium - frequency power supp...
The place is the haunt of off-duty policemen.这里是不当班的警察经常光顾的地方。The area was a haunt of criminals.这个地区是罪犯经常出没的地方.They say ghosts haunt this house.据说这所房子里常闹鬼....