The positive segregation in the upper center and the negativesegregation in the exterior region of the ingot are found at the same time.
还发现，在铸锭的中心靠上的区域形成正偏析，在铸锭的外部区域形成负偏析。
2
The induced electromagnetic field possesses the action of electromagnetic purification, and effectively removes formation of impurity grain, segregation, negativesegregation and gas cavity.
感生磁场具有电磁净化的作用，可以有效地消除杂质颗粒以及偏析、负偏析和气孔形成的机率。
3
In the slab, the negative carbon segregation region and positive segregation in the center are observed simultaneously.