<chr_abbr type="reg" class="sc" expan="Qua" cert="no">Q-alpha</chr_abbr> t il de<chr_var letter="s" var="long">∫</chr_var>tdi<chr_var letter="s" var="long">∫</chr_var>t co <chr_abbr type="reg" class="dc" expan="que" cert="no">q-hbar</chr_abbr> je uel 