精准选词的基本步骤是通过将热搜词输入到搜索框，从下拉框中采集长尾词。
流程图如下所示：
流程配置内容如下，用户可复制后导入到自己的流程管理系统。
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图中的流程节点7090根据直通车相关词采集对应的下拉框词，即长尾词。
如需手动运行该流程，可点击电商记网站首页的菜单。
调用该流程节点需要直通车相关词列表，在之前的步骤中由流程节点8394生成并保存在本地文件“data/subwaykeyword.json”中。输入的列表内容如图所示。
如果用户需要限制流程节点7090只采集前若干个关键词，例如前100个关键词，可双击节点，编辑网页流程节点的内容，如下所示：
流程在运行时，对每个关键词采集到的下拉框词，显示在右侧输出区：
流程页面的Sheet1表格内容如图所示：
流程采集所有数据后，会将Sheet1表格中的HTML格式消除。
流程运行结束后，流程图的“调试15”节点的输出内容形如，保存到本地文件“data/longtailkeyword.json”。
