math imgs alt was changed
e.g: https://www.wikiwand.com/en/Decibel
the alt of first formula at the "Power quantities":
origin:
L{P}={\frac {1}{2}}\ln !\left({\frac {P}{P{0}}}\right)!~\mathrm {Np} =10\log {10}!\left({\frac {P}{P{0}}}\right)!~\mathrm {dB} .
changed:
L{P}={\frac {1}{2))\ln !\left({\frac {P}{P{0))}\right)!~\mathrm {Np} =10\log {10}!\left({\frac {P}{P{0))}\right)!~\mathrm {dB} .
as often as not, it change right brace
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刘京玮
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