短语词组短語symmetrical band -reject filter [電子]對稱阻帶濾波器digital band -reject filter 數字帶阻濾波器band -reject crystal filter 帶阻晶躰濾波器comb adjustable band -reject filter 梳譜式阻帶可變濾波器image reject band -pass filter 鏡象抑制帶通濾波器 返回 band-reject filter