表面不连续性 meaning in Chinese

discontinuity of surface
surface discontinuity

Fasteners - surface discontinuities - part 2 : nuts
紧固件.表面不连续性.第2部分:螺母
Surface discontinuities on nuts
螺母表面不连续性
Founding - visual examination of surface discontinuities - steel sand castings
铸造.表面不连续性的目视检验.钢砂型铸件
Fasteners . surface discontinuties . part 3 : bolts , screw and studs for special requirements
紧固件.表面不连续性.第3部分:特殊要求的螺栓螺钉和螺柱
Fasteners . surface discontinuities . part 1 : bolts , screws and studs for general requirements
紧固件.表面不连续性.第1部分:一般要求的螺栓螺钉和螺柱