overfire 发表于 2014-11-27 18:05 一个孔有1db的衰减,你算下你有几个孔。实在要打孔,就打一个通孔吧
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, 2024-9-27 20:58 , Processed in 0.039940 second(s), 14 queries , Gzip On.
Powered by Discuz! X3.5
© 2001-2023 Discuz! Team.