SOURCE

<div>
<table border="1px">
      <thead>
        <tr>
          <th class="a">姓名(重复率)</th>
          <th class="a">姓名(重复率)</th>
          <th>重复行数</th>
        </tr>
      </thead>
      <tbody>
        <tr>
          <td>svsdafvsdvgdfgvfdgvd发撒说的发生的发生的发生的给答复V而非饿f</td>
          <td>fawefwe</td>
          <td>January</td>
        </tr>
        <tr>
          <td >February</td>
          <td>sdsdf</td>
          <td>February</td>
        </tr>
        <tr>
          <td>Sum</td>
          <td>$180</td>
          <td>Sum</td>
        </tr>
     </tbody>
</table>
  </div>

*{
  margin:0;
  padding:6px;
}
table, td, th
{
  text-align:center;
  border:1px solid black;
}
table{
	border-collapse: collapse;
}
.a{
  width:45%;
   text-overflow: ellipsis;
}