用户:Wdmjeims/test

化合价 (源)

${\overset {+2}{\mbox{C}}}{\overset {-2}{\mbox{O}}}$
${\overset {+2}{\mathbf {S} }}{\overset {-2}{\mathbf {O} }}_{4}{}^{2-}$

test

${\overset {+2}{C}}{\overset {-2}{O}}$
$2{\overset {+1}{K}}{\overset {+7}{Mn}}{\overset {-2}{O}}_{4}{\overset {\triangle }{=}}{\overset {+1}{K}}_{2}{\overset {+6}{Mn}}{\overset {-2}{O}}_{4}+{\overset {+4}{Mn}}{\overset {-2}{O}}_{2}+{\overset {0}{O}}_{2}\uparrow$
${\underset {wdmjeims}{JimmyWales}}$

ruby: ${\overset {JimmyWales}{wdmjeims}}$