These sections, via repetitiveloading, are subject to microfractures that are not reliably repaired, and which can result in catastrophic failure of the graft.
这部分不断修复，常有未可靠修复的微裂缝，可导致移植的重大失败。
2
Model reference control and repetitive control were applied in multi-channel electric hydraulic synchron-force servo loading system, and a new control method based on online learning was put forward.