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单词 geometrical square
释义

> as lemmas

geometrical square
c. geometrical square: see quadrat n. 1b. Obsolete.
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the world > the universe > cosmology > science of observation > astronomical instruments > measuring altitude > [noun] > quadrant or sextant > part of quadrant or sextant
quadrat?c1400
geometrical square?a1560
plummet?a1560
limb1593
line of shadows1728
limbus1738
horizon-glass1774
?a1560 L. Digges Geom. Pract.: Pantometria (1571) i. xxix. sig. I j v The other plate wherein youre square Geometricall and Theodelitus was described.
?a1560 L. Digges Geom. Pract.: Pantometria (1571) i. xxix. sig. I ij The double scale is compound of two Geometricall squares.
1728 E. Chambers Cycl. Quadrat, call'd also Geometrical Square and Line of Shadows, is an additional Member on the Face of the common Gunter's and Sutton's Quadrants.
extracted from squaren.
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