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Therefore,the several rephosphorization prevention methods are put forward by slag optical basicity control when the som...

提出在转炉下渣条件下,控制钢包渣光学碱度来控制回磷几点措施。

Based on engineering practice, discusses som e characteristics of air conditioning design in large space buildings with light s teel frames.

结合工程实践,探讨了大空间建筑空调设计一些特点。