There are multiple safe protectors: Overweight device, chain fracture device, device of the lock when it rised, there is a lock that stops the device on each post.
设有多重安全保护装置：超重装置，断链装置，上升过程中的自锁装置，每个立柱上均有锁止装置。
Objective To observe the effects of post-operative on-bed rehabilitation gymnastics on patients with lower limb fracture.
目的探讨床上康复操对下肢骨折患者术后卧床期间肢体功能康复的效果。
Conclusion Small plate with rigid internal fixation between the fixed jaw jaw fracture treatment under the effect of reliable, less post-operative complications, is an ideal method of operation.
结论小型接骨板坚固内固定辅以颌间固定治疗下颌骨骨折效果可靠，术后并发症少，是一种理想的手术方法。
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