a high frequency signal的用法和樣例：
例句
- High-speed in-amps may be used in many video and cable RF systems to amplify or process high frequency signals.
高速儀錶放大器可以用於許多視頻和閉路射頻系統的放大或者處理高頻信號。 - The high frequency signal can be decomposed, and the frequency field can be divided into tinier ones with the emerging of wavelet packets.
摘要小波包的方法能對高頻信號進行小波分解，給出了頻域帶更精細的劃分。
