Besides aging, weight bearing is probably a key factor of the increase of anulus fibrosus cells apoptosis.

除衰老外，负重可能是纤维环细胞凋亡增加的关键因素。

In the control group, fibrous anulus was intact.

对照组保持纤维环完整。

Summary of Background Data. Tears are evidence of structural failure involving the anulus .

数据信息概要：裂隙是包括纤维环在内结构失效的证据。

The progressive damage appears to develop with a small cleft inside the first inner layer of the anulus.

损伤的进展看似由纤维环最内第一层产生的小裂口开始。

Flash impetus and adopting projection anulus controlling upsetting, steady speed flash and quality of butt welding point is well.

闪光推进和顶锻采用凸轮控制，闪光速度平稳对接焊口质量好。