However, the zig-zag and discontinuous microscopic growth path of fatigue cracks with some branching cracks expanded locally was observed.
但从微观上看，裂纹的微观扩展路径曲折、不连续，常伴有分枝裂纹的形成。
2
Grain growth is a discontinuous process.
晶粒长大是一个不连续的过程。
3
As brittle material, the cutting process is complexity, it is in general discontinuous and it is caused by the growth and propagation of the microcracks in Indus trial ceramics.