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释义
the world > relative properties > number > geometry > line > [noun] > set or system of (12)
peacock's tail1570

Geometry. The eighth proposition of the third book of Euclid's Elements, which is accompanied by a figure in which a fanlike series of lines are…

harmonicala1746

as n. (plural) Straight lines forming a harmonic pencil; quantities in harmonical progression. Obsolete.

pencil1840

Geometry. A set of straight lines meeting in a point. Also more widely: a set of curves of a given order, passing through a number of points…

harmonic pencil1862

Mathematics. Applied to the relation of quantities whose reciprocals are in arithmetical progression (e.g. 1, 1/2, 1/3, 1/4,…); or to points, lines…

sheaf1863

Physics and Mathematics. A bundle of rays, lines, etc. all passing through a given point.

congruency1864

Geometry. A system of lines in which the parameters have a two-fold relation, such as a system of lines each of which twice touches a given surface.

linkage1874

The condition or manner of being linked; a system of links. Also, a link; an association or correlation; the process of linking or connecting…

congruence1879

Geometry. = congruency, n. 2.

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