请输入您要查询的英文单词:

 

单词 involute
释义

involute

/ˈɪnvəl(j)uːt /
adjective
1 formal Involved or intricate: the art novel has grown increasingly involute
2 technical Curled spirally.
2.1 Zoology (Of a shell) having the whorls wound closely round the axis.Most contemporary goniatitids had an involute shell with compressed whorls....
  • In the Anaspidea there is a tendency for parapodia to enlarge and, together with the mantle, to enclose the fragile shell (with increasingly reduced and involute spire).
  • Although no equatorial sections were recovered, the present specimens exhibit a likely involute initial stage followed by biserial, uncoiled later stage in which chambers are more flattened.
2.2 Botany (Of a leaf or the cap of a fungus) rolled inwards at the edges.They were found to comprise at least three different traits: involute leaves, early flowering, and Apetala flowers....
  • Distinguishing characteristics are fully double, involute florets that are narrow and pointed.
  • This mutant displayed involute leaves and early flowering, although less than clf and icu2 mutants (20 days after sowing).
noun Geometry
The locus of a point considered as the end of a taut string being unwound from a given curve in the plane of that curve. Compare with evolute.Since normals to a straight line never intersect and tangents coincide with the curve, evolutes, involutes and pedal curves are not too interesting....
  • He defines evolutes and involutes of curves and, after giving some elementary properties, finds the evolutes of the cycloid and of the parabola.
  • Hence a curve has a unique evolute but infinitely many involutes.

Origin

Mid 17th century: from Latin involutus, past participle of involvere (see involve).

随便看

 

英语词典包含243303条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间:2025/3/22 14:14:39