t-button shape=round theme=danger click=deleteoperatorindex num 删除序列 t-button t-button style=margin-left 10px;

Sure! Here's the modified code to display the dropdown separately on a new line:

<t-button shape="round" theme="danger" @click="deleteoperator(index, num)">
  删除序列
</t-button>

<t-button style="margin-top: 10px;" shape="round" theme="primary" size="extra-small" @click="addoperate(index)">
  添加操作
</t-button>

<div style="margin-top: 10px;">
  <t-select v-model="ele.characteristic" showArrow placeholder="点击" style="width: 120px;">
    <t-option key="点击" label="点击" value="点击" />
    <t-option key="滑动" label="滑动" value="滑动" />
    <t-option key="延时" label="延时" value="延时" />
    <t-option key="重启" label="重启" value="重启" />
    <t-option key="post" label="post" value="文本" />
    <t-option key="shell" label="shell" value="shell" />
  </t-select>
</div>

In this modified code, I have wrapped the <t-select> element inside a <div> container with a margin-top style to create a new line effect. You can adjust the margin-top value as per your requirement