单词	主震的
释义	主震的a.principal【地】主震的
随便看	frequency domain method frequency-domain method frequency domain method of dynamic analysis frequency-domain migration frequency domain parallelism frequency domain photon migration frequency-domain reflectometer frequency domain signal frequency-domain sounding frequency domain synthesis frequency doubler frequency doubler--fd frequency doubler; multiplier frequency doublers frequency doubler，fd frequency doubling frequency doubling amplifier frequency doubling efficiency frequency doubling test mode frequency down-conversion frequency downconversion frequency drift frequency drift vs. power supply voltage frequency drift vs. signal input level frequency drift vs. time from turn on