angularjs的each怎么限制迭代次数？

                                   {{each jd.addressbook as addressbook}}
                                          <tr class="tr-zy_zc" style="line-height:150%;padding:0px">
                                            <td>{{addressbook.name}}</td>
                                              <td>{{addressbook.area}}</td>
                                            <td>{{addressbook.addressValidateAmount}}</td>
                                              <td>{{addressbook.addressValidateNum}}</td>
                                            <td>{{addressbook.phone}}</td>
                                            <td>{{addressbook.address}}</td>
                                            <td>{{addressbook.email}}</td>
                                            <td>{{addressbook.fixationPhone}}</td>
                                       </tr>
                                    {{/each}} 

像这种{{each}}怎么限制只循环20次？