juatxy 发表于 2017-1-20 16:46 2#学习了~我也觉得应该看功率，毕竟是个能量转换的过程，先要声音大还是看功率吧 ...
Undo
Redo
Table
Removeformat
Autotypeset Left Center Right
FloatLeft FloatRight Orderedlist Unorderedlist
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