Crack, cold laps and lackoffusion belong to planar discontinuity.
属于这种类型的缺陷有裂纹、冷隔、末熔合等。
2
To a lesser extent, lackoffusion at the bottom of the joint was observed also.
在一定程度上接头上熔接不好的缺陷也观测到了。
3
The weld shall be free of any lackoffusion, undercutting, cracks and other defects which could impair the worability or use of the product in question as specified by the purchaser.