The TimeoutControl node has an In terminal to which you wire a source that provides a message tree with a certain structure (discussed in detail below). Elements of this tree include
TimeoutControl 节点具有一个 In 端子，可以将提供具有特定结构的消息树的源连接到其上（在下面详细讨论）。
3
Nine: the appearance of the tree needs to grow with aluminum wire, that is, with aluminum wire fixed branches, in accordance with established growth direction.