uview2.0中单选框u-radio组件未能产生互斥

uview2.0中单选框u-radio组件未能产生互斥，vue框架，uview框架

<u-radio-group
    v-model="radiovalue1"
    placement="column"
    @change="groupChange"
  >
    <u-radio
      :customStyle="{marginBottom: '8px'}"
      v-for="(item, index) in radiolist1"
      :key="index"
      :label="item.name"
      :name="item.name"
      @change="radioChange"
    >
    </u-radio>
  </u-radio-group>

是不是没有唯一标识