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

1.结合工程实践,探空间建筑空调设计的一些特点。

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

2.此提出在转炉下条件下,控制光学碱度来控制回磷的几点措施。