<chr_abbr type="frq" class="ss" expan="et" cert="yes">et2</chr_abbr> ia e<chr_var letter="s" var="long">∫</chr_var>toit <chr_abbr type="reg" class="dc" expan="" cert="no">p-hbar</chr_abbr><chr_var letter="s" var="long">∫</chr_var> n<chr_abbr type="reg" class="dc" expan="on" cert="no">o-hbar</chr_abbr>ne ba<chr_var letter="s" var="long">∫</chr_var><chr_var letter="s" var="long">∫</chr_var>e 