class="mlabels-right">
<span class="mlabels"><span class="mlabel">protected</span></span>  </td>
  </tr>
</table>
</div><div class="memdoc">
<p>reference smoothing length </p>

</div>
</div>
<a id="add09f20c59dfb7d2d2538d235f1b5bbc"></a>
<h2 class="memtitle"><span class="permalink"><a href="#add09f20c59dfb7d2d2538d235f1b5bbc">&#9670;&nbsp;</a></span>h_spacing_ratio_</h2>

<div class="memitem">
<div class="memproto">
<table class="mlabels">
  <tr>
  <td class="mlabels-left">
      <table class="memname">
   