Q<chr_abbr type="reg" class="dc" expan="ui" cert="no">apost</chr_abbr> ci<chr_var letter="s" var="long">∫</chr_var>t chem<chr_abbr type="reg" class="dc" expan="in" cert="no">i-hbar</chr_abbr><chr_var letter="s" var="long">∫</chr_var> e<chr_var letter="s" var="long">∫</chr_var>t <chr_abbr type="reg" class="sc" expan="tro" cert="no">t-o</chr_abbr>p e<chr_var letter="s" var="long">∫</chr_var>t<chr_abbr type="reg" class="sc" expan="ira" cert="no">i-alpha</chr_abbr>z 