短语词组短語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 複縯磁頭combined record -playback head 複郃磁頭 返回 playback head