就炼铁-炼钢区段而言，其“界面”是指存在于炼铁、炼钢这两个相对“刚性”的工序间的一段相对“柔性”的“界面”，它包含炼铁、炼钢工序之间多维物质流的衔接、传递、匹配和缓冲等过程，还包含完成这些过程所耗费的时间、占有的空间，以及其所属工序、装置、容量、运输设备、路线、调度管理和控制程序等多方面的内容。

In terms of iron - steel sections, the "interface" refers to exist in the ironmaking and steelmaking both relatively "rigid" process between a relatively "flexible" "interface", it contains the ironmaking and steelmaking process between the cohesion of the multidimensional material flow, transfer, matching and buffer, such as process, also contains the complete these processes the amount of time, occupies a space, And its process, device, capacity, transportation equipment, route, scheduling management and control procedures and other aspects of the content.