channel pin
... 通道矩阵 channel matrix 沟钉 channel pin 选道 channel selection ...
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螺钉头沟槽铣床 Screw milling machine
沟槽钉板测验 groovepegboardtest
·2,447,543篇论文数据，部分数据来源于NoteExpress
结果测量出寰椎后弓、侧块、椎动脉沟、后弓侧块螺钉通道的轴线长度，及后弓进钉点和进钉方向等参数。
Result the parameters of posterior arch, lateral mass, vertebral artery groove, axis length of screw pass via posterior arch and lateral mass, projection and direction of screw were measured.
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