1. 以低于信號中最高頻率兩倍的頻率進行信號取樣時出現(xiàn)的一種效應，即當由取樣狀態(tài)還原時，還原后的信號將不再含有原來信號中的高頻成分，并將顯示出虛假的低頻信號。
   An effect that occurs when a signal is sampled at a rate less than twice the highest frequency present in the signal.The subsequent signal recovered from the samples will not contain the high frequency component of the original signal and will display a false low frequency signal.
2. 透熱療法用電極或其它器械通過各種波長的高頻電流使在組織內產生熱以達到內外科治療目的
   The therapeutic generation of local heat in body tissues by high-frequency electromagnetic currents.

高的英語翻譯：

頻的英語翻譯：