一接头，设置在上述芯线及包覆层的首端与电源的供电线的连接处，用以包覆所述的铜绞合线与电源的供电线的电气连接的塑料罩壳。
A joint. It is set at the connection of the cover head of core with power supply wire to cover the plastic casing of electric connection of copper strand and power supply wire.
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.
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