在引导孔内放置椎弓根螺钉(直径3.5 mm)，随即解剖并分离椎骨，此时就可以直观的观察到螺钉的轨线。
Pedicle screws (3.5 mm diameter) were placed in the pilot holes. The spines were then dissected to separate the vertebrae, and the trajectory of the screws was visually inspected.
所述气体引导部将源气体引导至所述板子的中心部分，并使从所述催化剂供应孔排出的金属催化剂沿特定方向悬浮。
The gas guiding portion guides source gas to the central portion of the plate and suspends the metal catalysts discharged from the catalyst supply hole in a specific direction.
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