edwardflee 发表于 2009-8-28 12:50 没啥可记的 无非就是俩公式P=u^2/R P(dB)=10logP
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, 2024-7-7 06:01 , Processed in 0.044289 second(s), 17 queries , Gzip On.
Powered by Discuz! X3.5
© 2001-2023 Discuz! Team.
