| 单词 | major axis |
| 释义 | > as lemmasmajor axis major axis n. Geometry the axis of a conic section, which passes through the foci, esp. the longer axis of an ellipse; also called principal axis, transverse axis. ΘΚΠ the world > the universe > planet > planetary movement > [noun] > orbit > major axis major axis1840 the world > relative properties > number > geometry > geometric space > [noun] > division or marking of > axis > passing through foci principal axis1704 transverse axis1704 transverse1743 longitudinal axis1744 focal axis1794 major axis1840 1840 Penny Cycl. XVII. 492/1 The major axis of the isometrical projection of a circle is equal to the side of the circumscribing square. 1885 C. Leudesdorf tr. L. Cremona Elements Projective Geom. 275 The polar reciprocal of an ellipse (hyperbola) with respect to a circle having its centre at a focus and its radius equal to half the minor (conjugate) axis is the circle described on the major (transverse) axis as diameter. 1969 T. R. McGuire & P. J. Flanders in A. E. Berkowitz & E. Kneller Magnetism & Metall. I. iv. 145 The reflected light is elliptically polarized with the major axis of the ellipse rotated with respect to the original axis of the light. 1992 Astron. Now July 16/2 The spot was 0.22 magnitudes fainter than the Moon's crescent and..its shape was not circular but rather elliptical, with its major axis along the terminator. < as lemmas |
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