The wheel head can be orientated in double axes so that any spiral Angle and back Angle may be adjusted rapidly.
该机床磨头可以又轴定位，任何螺旋角和后角均可快速调整。
In this image, I made sure to align the head of my subject within the spiral and placed the left eye approximately over the sweet spot.
这张照片中，我把模特的头放在螺旋线上，而让他的左眼位于节点上。
The transepicondylar axis of different position has no effect on volume rendering technique measuring the humeral head retroversion angle with multi slice spiral CT.
肱骨远端不同位置内外上髁轴线对多层螺旋CT容积再现测量肱骨头扭转角没有影响；
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