纵向裂纹 meaning in English

centerline crack
longitudinal crack

Longitudinal crack formed when screw steel rebar is cold - bended was analyzed . the result indicates that ununiformly distributed silicate inclusions contributed to the longitudinal crack . protective measurements were also provided
摘要对螺纹钢筋由冷弯产生的纵向裂纹进行了分析，结果表明，硅酸盐夹杂物分布不均匀是造成螺纹钢筋冷弯纵向裂纹的主要原因，并提出了相应的预防措施。