Under different B4C content, layer cover to melt dark to appear change that make a reduction of after increasing with B4C increase of content layer, melt widely and present "n" type change.
在不同的B4C含量下，熔覆层的熔深随b4c含量的增多出现先增后减的变化，熔宽出现“N”型变化。
Under different B4C content, layer cover to melt dark to appear change that make a reduction of after increasing with B4C increase of content layer, melt widely and present "n" type change.
在不同的B4C含量下，熔覆层的熔深随b4c含量的增多出现先增后减的变化，熔宽出现“N”型变化。
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