英语词汇“plane of symmetry”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

> as lemmas

plane of symmetry

plane of symmetry n. a plane which divides a figure or body into two symmetrical parts, perpendicularly bisecting the lines joining each symmetrically corresponding pair of points.

ΚΠ

1850 W. H. C. Bartlett Elem. Nat. Philos. i. vi. 139 A body is said to be symmetrical in reference to a plane, when the latter cuts into two equal parts every perpendicular which is drawn to it, and which is terminated by the opposite extremes of the body. This plane is called the plane of symmetry.

1938 R. Hum Chem. for Engin. Students ii. 43 The Monoclinic System.—This is sometimes called the ‘monosymmetric system’. It contains forms which have only one plane of symmetry.

1991 R. A. Fortey Fossils (BNC) (ed. 2) 82 Some [carpoids] are bilaterally symmetrical, but others have no obvious plane of symmetry at all.

extracted from planen.³

plane of symmetry

axis of symmetry, centre of symmetry, plane of symmetry, the line, point, or plane about which a figure or body is symmetrical, i.e. which bisects every straight line joining a pair of corresponding points of such figure or body.

extracted from symmetryn.

as lemmas

单词	plane of symmetry
释义	> as lemmas plane of symmetry plane of symmetry n. a plane which divides a figure or body into two symmetrical parts, perpendicularly bisecting the lines joining each symmetrically corresponding pair of points. ΚΠ 1850 W. H. C. Bartlett Elem. Nat. Philos. i. vi. 139 A body is said to be symmetrical in reference to a plane, when the latter cuts into two equal parts every perpendicular which is drawn to it, and which is terminated by the opposite extremes of the body. This plane is called the plane of symmetry. 1938 R. Hum Chem. for Engin. Students ii. 43 The Monoclinic System.—This is sometimes called the ‘monosymmetric system’. It contains forms which have only one plane of symmetry. 1991 R. A. Fortey Fossils (BNC) (ed. 2) 82 Some [carpoids] are bilaterally symmetrical, but others have no obvious plane of symmetry at all. extracted from planen.³ plane of symmetry axis of symmetry, centre of symmetry, plane of symmetry, the line, point, or plane about which a figure or body is symmetrical, i.e. which bisects every straight line joining a pair of corresponding points of such figure or body.extracted from symmetryn. < as lemmas
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