A conic section whose plane is not parallel to the axis base or generatrix of the intersected cone.
圆锥的一部分，其切面既不平行于轴和基面，也不平行于圆锥母线。
The technological parameters control method is used to reduce machining deflection errors of cone axis, thus assuring the machining precision.
并用工艺参数控制法减少锥轴的切削变形误差，从而保证加工精度。
The direction of the axis changes gradually so that it traces out a cone in space.
轴的方向逐渐在变，导致了轴的空间描绘出一个圆锥。
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