| 单词 | swing-conic | 
| 释义 | > as lemmasswing-conic  c.   Dynamics. In terms used by Clifford for various geometrical figures or lines having relation to the oscillation of a body, as  swing-conic,  swing-ellipse,  swing-ellipsoid,  swing-quadric,  swing-radius. ΚΠ 1887    W. K. Clifford Elem. Dynamic  i. iv. 17  				The second moment of an area in regard to any line, divided by the area itself, is the square of a length which is called the swing-radius of the area in regard to the line, or of the line in regard to the area. 1887    W. K. Clifford Elem. Dynamic  i. iv. 24, 34.  				 < as lemmas | 
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