These sections, via repetitive loading, 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。
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.
将模型参考控制和重复控制相结合应用到多通道电液力同步加载系统中，提出了一种在线学习控制的新方法。
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