The result has shown that the fracture was caused by such surface defects as foldcrack in section a at connecting rod small end.
结果表明，断裂由连杆小头A截面的表面缺陷(折叠裂纹等)引起。
2
You shall not fold your wings that you may pass through doors, nor bend your heads that they strike not against a ceiling, nor fear to breathe lest walls should crack and fall down.
The ore belts, mining area, deposits and ore-bodies are all controlled by the deep faults, large scale shear zones and the fold and fault-crack system aside.