短語詞組短語playback k head 讀出頭;放音磁頭magnetic playback head [計]讀出磁頭recording playback head 記錄重放磁頭recording -playback head [電子]錄放兩用磁頭playback head detail 復(fù)演磁頭combined record -playback head 復(fù)合磁頭 返回 playback head