| 单词 | vector radius |
| 释义 | > as lemmasvector radius ΘΚΠ the world > the universe > heavenly body > movement of heavenly bodies > [noun] > movement in orbit > orbit > parts of orbit aphelion1656 perihelion1666 vector1704 elongation1708 orb1733 periaster1851 orbitale1901 Lagrangian point1962 1704 J. Harris Lexicon Technicum I. (at cited word) A Line supposed to be drawn from any Planet moving round a Center, or the Focus of an Ellipsis, to that Center or Focus, is by some Writers of the New Astronomy, called the Vector; because 'tis that Line by which the Planet seems to be carried round its Center. 1796 J. Morse Amer. Universal Geogr. (new ed.) I. 28 If a right line, called by some the vector radius, be drawn from the sun through any planet, and supposed to revolve round the sun with the planet [etc.]. < as lemmas |
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