Crack, cold laps and lack of fusion belong to planar discontinuity.

属于这种类型的缺陷有裂纹、冷隔、末熔合等。

youdao

Crack, cold laps and lack of fusion belong to planar discontinuity.

属于这种类型的缺陷有裂纹、冷隔、末熔合等。

youdao