结论：从未退变的椎间盘分离的纤维环细胞能在体外分化为脂肪细胞、格根包尔氏细胞、软骨细胞、神经元及内皮细胞。

Conclusions Anulus fibrosus cells isolated from nondegenerative intervertebral discs can differentiate into adipocytes, osteoblasts, chondrocytes, neurons, and endothelial cells in vitro.

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对比研究了不同退火温度对贝氏体球铁辊环组织和硬度的影响，提出了贝氏体球铁辊环合适的退火温度。

The influences of different annealing temperature on the structure and hardness was compared and investigated. The proper annealing temperature for the bainite nodular iron roller ring was proposed.

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所用的电路为蔡氏电路和锁相环电路。

The circuits used are Chua 'circuit and phase lock loop.

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