钢铁主业
钢铁主业-
铁矿资源贸易与钢铁主业海外战略分析
Abroad strategic analysis on iron ore resources and iron and steel
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唐钢钢铁主业发展战略研究
Studies on Development Stratagem for Tangshan Iorn and Steel Co. , Ltd
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随着钢铁主业的发展，铁路运输规模不断扩大，厂内铁路轨道类型亟待修改完善。
Modes of the railway tracks in the plant area have to be readjusted and perfected with the development of iron and steel making sector and expansion of scale of the railway transportation .