炼化司的英文：
Department of Refining and Chemicals

A government department or a subdivision of a department.
局司处等行政单位政府部门或其下属机构

He's the departed department leader.
他是过去的部门领导。

The bulk of the work rolls from department to department.
大量的工作从一个部门转移到另一个部门。

grain refined zone
再结晶区

You must refine your manners.
你必须使你的举止优雅高尚。

Affectedly delicate or refined;mincing.
过分讲究的过于精致或优美的；矫揉造作的