Reflective crack caused surface cracking, spalling, surface water infiltrating along the seam, so that the road was damaged.
反射裂缝导致面层开裂、剥落，路面水沿裂缝下渗，使路面发生损坏。
It puts forward a conception of weld inclusions crack index so as to better control quality of weld seam.
为了更好地控制焊缝质量，提出了焊缝夹杂物裂纹指数的概念。
The hole has the pore and the small hole, the seam has the tiny crack and the dynamic change obvious seam obviously.
孔有毛细孔和可见小孔洞，缝有微细裂纹和动态变化的可见缝。
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