<chr_abbr type="reg" class="sc" expan="Qua" cert="no">Q-alpha</chr_abbr> pre<chr_var letter="s" var="long">∫</chr_var> el<chr_var letter="s" var="long">∫</chr_var> naille me<chr_abbr type="reg" class="dc" expan="in" cert="no">i-hbar</chr_abbr>ten<chr_abbr type="reg" class="dc" expan="an" cert="no">a-hbar</chr_abbr>t. 