el-table 点击checkbox 如何打开对应禁用按钮

 <el-table
          ref="nRiskRateData"
          :data="nRiskRateData"
          tooltip-effect="dark"
          style="width: 100%">
          <el-table-column
            type="selection"
            width="55">
          </el-table-column>
          <el-table-column label="a" width="200" prop="riskSorted" align="center">
          </el-table-column>
          <el-table-column label="c" width="200" prop="riskCode" align="center">
          </el-table-column>
          <el-table-column label="b" width="200" prop="riskName" align="center">
          </el-table-column>
          <el-table-column label="d" width="200" prop="rateTop" align="center">
            <template slot-scope="scope">
              <el-input v-model="scope.row.rateTop" :disabled="true">
                <template slot="append">%</template>
              </el-input>
            </template>
          </el-table-column>
        </el-table>

点击复选框，按钮禁用/启用