 61</span>&#160;            StdVec&lt;StdLargeVec&lt;Vecd&gt; *&gt; contact_vel_n_;</div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;            <a class="code" href="class_std_vec_3_01_real_01_4.html">StdVec&lt;Real&gt;</a> mu_;</div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;            <a class="code" href="class_std_vec_3_01_real_01_4.html">StdVec&lt;Real&gt;</a> smoothing_length_;</div><div class="line"><a name="l00064"></a><span clas