Assertion: ellipsoid | /r/HasProperty | confocal
Facets:
Source sentences:
text: \overline {r}}_{z}^{2}=r_{z}^{2}-\lambda } are valid, which means the two ellipsoids are confocal.
text: \overline {r}}_{z}^{2}=r_{z}^{2}-\lambda } are valid, which means the two ellipsoids are confocal.