| 词汇 | subtend |
| 释义 | subtend verb[ T ] mathematics specializeduk /sʌbˈtend/ us /sʌbˈtend/ When a line subtends an angle, lines drawn from its ends form that angle at the point where they meet: 对向（角或边） It can be proved that the angle subtended by an arc of a circle at the centre of a circle is twice the angle subtended by that arc at a point on the circumference of the circle.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。 Geometry: describing angles, lines & orientations angle of incidence angularity antinode asymptote asymptotic gradient interior angle multiaxial non-coplanar non-intersecting non-planar reflex scalene triangle shallow sine supplementary triangulate unbowed vanishing point vertically Examples of subtendsubtend Five whorls of bracts subtending sporangia are visible. At this viewing distance, 1 cm on the screen subtended about 1° at the subject's eye. The units responded to movement of the small convex stimulus and equally well to edges and other stimuli that subtended a larger visual angle. 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. The hafgerdingar subtend a ver tical angle of 8 arcminutes. 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). Globular embryos subtended by a short suspensor were visible in all seeds sampled at the time of natural dispersal. One reasonable explanation may be found in the different philosophies that subtend actions in favor of women in science in the two regions. The bleaching flash subtended 178 diameter and was centered on the fovea. Each letter subtended 0.4 cm horizontally; at a distance of 57 cm, this corresponds to 0.4° of visual angle. We also add a point if the angle subtended by the arc through a marker point is larger than a pre-established maximum. 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. |
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