It melt cover close to alloy layer there aren't line the parts, melt cover layers of upper strata organize until tiny branch is the brilliant and equiaxed grain brilliant to make up.
熔覆层接近熔合线部分出现枝状晶，熔覆层上层组织由细小的枝晶及等轴晶组成。
It melt cover close to alloy layer there aren't line the parts, melt cover layers of upper strata organize until tiny branch is the brilliant and equiaxed grain brilliant to make up.
熔覆层接近熔合线部分出现枝状晶，熔覆层上层组织由细小的枝晶及等轴晶组成。
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