Distortion seam construction 变形缝施工

Saw seam construction 锯缝施工

no-seam construction 无缝施工

vertical construction seam 竖向施工缝

horizontal construction seam 水平施工缝

Construction seam 施工缝

seam-frame construction 缝合船架结构

seam opening construction 揭煤施工

crack at construction seam 施工缝处裂缝