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单词 subtend
释义
subtend
verb[T]
mathematicsspecialized
uk
/sʌbˈtend/us
/sʌbˈtend/
When alinesubtends anangle,linesdrawnfromitsendsformthatangleat thepointwhere theymeet:
对向（角或边）
It can beprovedthat theanglesubtended by anarcof acircleat thecentreof acircleistwicetheanglesubtended by thatarcat apointon thecircumferenceof thecircle.可以证明，圆弧在圆心所切的角是该圆弧在圆周上某点所切角的两倍。
SMART Vocabulary: related words and phrases
Geometry: describing angles, lines & orientations
  • acute
  • angle of incidence
  • angularity
  • antinode
  • asymptote
  • asymptotic
  • circuitous
  • equilateral
  • glancing
  • indirect
  • non-planar
  • noncollinear
  • obliquely
  • obtuse
  • orthogonal
  • osculate
  • projection
  • prominent
  • rectilinear
  • reflection
See more results »
(Definition ofsubtendfrom theCambridge Advanced Learner's Dictionary & Thesaurus© Cambridge University Press)

Examplesofsubtend

subtend
Five whorls of bracts subtending sporangia are visible.
From theCambridge English Corpus
At this viewing distance, 1 cm on the screen subtended about 1° at the subject's eye.
From theCambridge English Corpus
The units responded to movement of the small convex stimulus and equally well to edges and other stimuli that subtended a larger visual angle.
From theCambridge English Corpus
The entire display subtended only 28 of the visual angle so that saccades could not be engaged during visual search for items to be counted.
From theCambridge English Corpus
The hafgerdingarsubtenda ver tical angle of 8 arcminutes.
From theCambridge English Corpus
At the viewing distance, the resolution was approximately 2 min per pixel, and the noise elements subtended 18 min of visual angle (9 9 pixels).
From theCambridge English Corpus
Globular embryos subtended by a short suspensor were visible in all seeds sampled at the time of natural dispersal.
From theCambridge English Corpus
One reasonable explanation may be found in the different philosophies thatsubtendactions in favor of women in science in the two regions.
From theCambridge English Corpus
The bleaching flash subtended 178 diameter and was centered on the fovea.
From theCambridge English Corpus
Each letter subtended 0.4 cm horizontally; at a distance of 57 cm, this corresponds to 0.4° of visual angle.
From theCambridge English Corpus
We also add a point if the angle subtended by the arc through a marker point is larger than a pre-established maximum.
From theCambridge English Corpus
These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
#https://dictionary.cambridge.org//dictionary/english/subtend##
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更新时间：2024/12/28 11:25:17