zhjbin001 发表于 2015-4-9 14:58 收音机收听的时候需要天线.而耳机就是充当FM的天线. 由于FM的频率比较低 要求天线有比较长的波长,普通天线 ...
Undo
Redo
Table
Removeformat
Autotypeset Left Center Right
FloatLeft FloatRight Orderedlist Unorderedlist
点击图片添加到帖子内容中
Archiver|手机版|小黑屋|52RD我爱研发网 ( 沪ICP备2022007804号-2 )
GMT+8, 2024-9-29 13:07 , Processed in 0.040635 second(s), 14 queries , Gzip On.
Powered by Discuz! X3.5
© 2001-2023 Discuz! Team.