<chr_abbr type="frq" class="ss" expan="et" cert="yes">et2</chr_abbr> di<chr_var letter="s" var="long">∫</chr_var>t <chr_abbr type="frq" class="ct" expan="molt" cert="no">ml[apost]t</chr_abbr> no<chr_var letter="s" var="long">∫</chr_var> <chr_abbr type="frq" class="ss" expan="est" cert="no">est</chr_abbr> b<chr_abbr type="reg" class="dc" expan="" cert="no">n-hbar</chr_abbr> chau 