基于OR B的通信是不可靠的，无法保证将消息和返回值发送到既定目标。
ORB-based communication isn't reliable, and there's no guarantee that the messages and return values will be delivered to the intended targets.
托槽垂直向移位可引起既定转矩值的改变，尖牙托槽底板弧度应有近远中之分。
The vertical shifts of brackets could change the preadjusted torque value and the design of cuspid bracket should have the distinction between mesial and distal shape.
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