• 1. DROP column-name: 删除某个字段

• 1.All you need to do is select the appropriate connection from the drop-down list in the Net Name column; in this case, uart_RX.
  要做的就是从Net name列的下拉列表中选择合适的连接；在本例中，选择uart_RX。
  dict.yoduao.com

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