778em;"></span><span class="mord mathrm">per</span><span class="mspace" style="margin-right:0.2777777777777778em;"></span><span class="mord mathrm">batch</span></span></span></span></span><span class="vlist-s">​</span></span><span class="vlist-r"><span class="vlist" style="height:0.8804400000000001em;"><span></span></span></span></span></span><span class="mclose nulldelimiter"></span></span><span class="mspace" style="margin-right:0.2222222222222222em;"></span><span class="mbin">×</span><span class="mspa