本文研究了一个新问题——企业内多台不同役龄设备的匹配。

This article studies a new problem, that is, match of several apparatus with different service years in enterprise.

针对1、2焦炉服役龄长，出现的一系列问题，进行了技术改进。

Facing to the problems of the long life coke furnace 1 and 2 the technical improvement has been done.