... weekday 周日;平常日 spreading screw 分布螺旋器. caboose 车务员专用车 ...
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The technique of free hand insertion with the lateral mass screw of atlas and vertebra dentata pedicle screw is simple, fixation is reliability and is well worth to spreading.
寰椎侧块螺钉与枢椎椎弓根螺钉徒手植入技术简单、可靠，值得推广。
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