incomplete fusion fission 非完全熔合裂变
complete fusion and incomplete fusion 全熔合与非完全熔合
incomplete inter-run fusion 焊道间未熔合
The weld defects of incomplete fusion and burn through always occur when the electro-slag welding is used between the outside thin metal plate and the inner clapboard in a box-section member.
箱形截面构件薄壁板与内隔板电渣焊接时，易产生壁板烧穿和焊缝未熔合现象。
Lastly, it is stressed that the defect of incomplete fusion has the greatest impact on the welding quality.
最后强调以未熔合缺陷对焊接质量影响最大。
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