When a docking port opens, an arm ( a cylindrical corridor ) deploys and connects to the station. For the system to work, all stations must also feature docking ports on their hull.

• 对接口打开时，会有一条机械臂（内有环形通道）伸出并与空间站对接。为使系统能正常工作，每个空间站都必须装配对接口。