subtend

简明释义

英[səbˈtend]美[səbˈtend]

vt. 对向；包在叶腋内

第 三 人 称 单 数 s u b t e n d s

现 在 分 词 s u b t e n d i n g

过 去 式 s u b t e n d e d

过 去 分 词 s u b t e n d e d

英英释义

单词用法

同义词

反义词

例句

1.The chord of a circle subtends a right angle at the circumference if it is perpendicular to the radius at the end point.

如果圆的弦在端点处垂直于半径，那么它在圆周上subtend一个直角。

2.In astronomy, the distance between two stars can be measured by the angle they subtend from a given point on Earth.

在天文学中，两个星星之间的距离可以通过它们从地球上的某一点subtend的角度来测量。

3.The two sides of a triangle subtend an angle at the vertex opposite the base.

三角形的两条边在底边对面的顶点处subtend一个角。

4.In geometry, two lines can be said to subtend an angle at a point.

在几何学中，两条线可以在某一点subtend一个角。

5.The angle formed at the center of a circle is equal to the angle that is subtended by the same arc on the circumference.

在圆心形成的角等于同一弧在圆周上所subtend的角。

作文

In the realm of mathematics and geometry, the concept of angles and their relationships plays a pivotal role in understanding various shapes and figures. One term that often arises in this context is "subtend." To "subtend" 指的是在几何中，一个角所夹的两条线段所形成的图形或区域 an angle means that two lines or segments extend from a common point, creating an angle at that point. This term not only applies to angles but also has broader implications in fields such as physics and architecture.For instance, consider a simple triangle. The sides of the triangle are lines that can be said to "subtend" the angles at each vertex. When we look at the triangle from a distance, the angles created by the sides give us insight into the shape's properties. The larger the angle, the more significant the effect it has on the overall structure of the triangle. In this way, the concept of "subtending" is essential for understanding how different parts of a geometric figure relate to one another.Moreover, in the field of physics, especially when discussing waves and light, the term "subtend" takes on another layer of meaning. For example, when two points of light are observed from a certain distance, the angle formed between the lines drawn from these points to the observer can be said to "subtend" an angle at the observer's eye. This understanding is crucial in optics, where the subtended angle can affect how we perceive the brightness and clarity of the light source.In architecture, the idea of "subtending" becomes even more critical. When designing a building or a structure, architects must consider how different elements will interact with each other. For instance, the roof of a building may "subtend" the walls, creating a specific aesthetic and functional relationship. This relationship is not merely visual; it also affects the structural integrity of the building. If the angles are not properly calculated, the entire structure could be compromised.Furthermore, the concept of "subtend" is not limited to physical structures or geometric shapes. It can also be applied metaphorically in various contexts. For example, in discussions about social dynamics, one might say that certain behaviors or actions "subtend" underlying motivations or cultural norms. In this sense, recognizing what "subtends" a particular action allows for a deeper understanding of human behavior and societal interactions.In conclusion, the term "subtend" 在几何和其他领域中具有重要意义，帮助我们理解不同元素之间的关系. Whether in mathematics, physics, architecture, or even social sciences, recognizing how different components "subtend" angles or relationships enriches our comprehension of the world around us. As we continue to explore and analyze various disciplines, the importance of understanding concepts like "subtend" will undoubtedly remain relevant, guiding us toward a more profound appreciation of both the tangible and intangible connections that shape our experiences.