接合部组织由晶界铁素体及晶内上贝氏体组成。

Themicrostructure of bonded zone consist of upper bainite and grain boundary ferrite.

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接合部组织由晶界铁素体及晶内上贝氏体组成。

Themicrostructure of bonded zone consist of upper bainite and grain boundary ferrite.

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