英语词汇“dihedral summit”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

1. Having or contained by two planes or plane faces (originally Crystallography). dihedral angle, the inclination of two planes or plane faces which meet at an edge, spec. the angle formed by the wing pairs of an aeroplane; dihedral summit, a summit (of a crystal) terminating in a dihedral angle. spec. Aeronautics, designating the inclination, esp. upwards, of a wing or other surface to the horizontal, or the angle to the horizontal so formed; dihedral board, a device used in measuring the dihedral angle of the wings of an aeroplane.

ΚΠ

1799 tr. Laboratory (ed. 6) I. i. 2 Terminating in dihedral pyramids.

1808 Thomson in Philos. Trans. (Royal Soc.) 98 69 Oxalate of potash..crystallizes in flat rhomboids..terminated by dihedral summits.

1826 W. Henry Elem. Chem. I. 38 Variations of temperature produce a..difference in..a crystal of carbonate of lime..As the temperature increases, the obtuse dihedral angles diminish..so that its form approaches that of a cube.

1863–72 H. Watts Dict. Chem. II. 124 [In the rhombic dodecahedron] The dihedral angles formed by the meeting of the faces are all equal to 120°.

1909 Westm. Gaz. 11 Mar. 4/1 The problem of automatic transverse stability is solved by giving the aeroplanes a dihedral angle or keels.

1916 H. Barber Aeroplane Speaks iii. 108 Another method of securing the dihedral angle..is by means of the dihedral board.

1917 C. C. Turner Aircraft of To-day viii. 140 Inherent stability is secured..by a dihedral setting of the wings, i.e. sloping up to right and left from the body.

1960 C. H. Gibbs-Smith Aeroplane i. ix. 38 They had at first rigged it with a dihedral angle, and found it flew badly in gusty winds.

单词	dihedral summit
释义	> as lemmas dihedral summit 1. Having or contained by two planes or plane faces (originally Crystallography). dihedral angle, the inclination of two planes or plane faces which meet at an edge, spec. the angle formed by the wing pairs of an aeroplane; dihedral summit, a summit (of a crystal) terminating in a dihedral angle. spec. Aeronautics, designating the inclination, esp. upwards, of a wing or other surface to the horizontal, or the angle to the horizontal so formed; dihedral board, a device used in measuring the dihedral angle of the wings of an aeroplane. ΚΠ 1799 tr. Laboratory (ed. 6) I. i. 2 Terminating in dihedral pyramids. 1808 Thomson in Philos. Trans. (Royal Soc.) 98 69 Oxalate of potash..crystallizes in flat rhomboids..terminated by dihedral summits. 1826 W. Henry Elem. Chem. I. 38 Variations of temperature produce a..difference in..a crystal of carbonate of lime..As the temperature increases, the obtuse dihedral angles diminish..so that its form approaches that of a cube. 1863–72 H. Watts Dict. Chem. II. 124 [In the rhombic dodecahedron] The dihedral angles formed by the meeting of the faces are all equal to 120°. 1909 Westm. Gaz. 11 Mar. 4/1 The problem of automatic transverse stability is solved by giving the aeroplanes a dihedral angle or keels. 1916 H. Barber Aeroplane Speaks iii. 108 Another method of securing the dihedral angle..is by means of the dihedral board. 1917 C. C. Turner Aircraft of To-day viii. 140 Inherent stability is secured..by a dihedral setting of the wings, i.e. sloping up to right and left from the body. 1960 C. H. Gibbs-Smith Aeroplane i. ix. 38 They had at first rigged it with a dihedral angle, and found it flew badly in gusty winds. extracted from dihedraladj.n. < as lemmas
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> as lemmas