Quadrant

(noun.) a measuring instrument for measuring altitude of heavenly bodies.

(noun.) the area enclosed by two perpendicular radii of a circle.

(noun.) any of the four areas into which a plane is divided by two orthogonal coordinate axes.

(noun.) a quarter of the circumference of a circle.

休伯特校对

• Before 1597 he had completed his great mural quadrant at the observatory of Uraniborg. 李贝. 西洋科学史.
• A little higher on A will be seen a quadrant B (see plan) near the edge of which are set 13 little pins. 威廉K.戴维. 智者、化学家和伟大医生的秘密.
• Thomas Godfrey, a self-taught mathematician, great in his way, and afterward inventor of what is now called _Hadley's Quadrant_. 本杰明·富兰克林. 富兰克林自传.
• He called it wi th characteristic vanity the Tichonic quadrant. 李贝. 西洋科学史.
• The quadrant, B, has cogs cut, between which Z slides and stops the motion of A, which is moved, as before, by clockwork. 威廉K.戴维. 智者、化学家和伟大医生的秘密.
• The place is stored with great variety of sextants, quadrants, telescopes, astrolabes, and other astronomical instruments. 乔纳森·斯威夫特. 格列佛游记.

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