semidiameter

简明释义

英[ˌsemɪdaɪˈæmɪtə(r)]美[ˌsemɪdaɪˈæmətər;ˌsemaɪdaɪˈæm

n. 半径

英英释义

单词用法

同义词

反义词

例句

1.The invention embodiment discloses a design method of an aspherical lens, which comprises: the surface with the semidiameter of R1 is taken as the spherical surface part of the aspherical lens;

本发明实施例公开了一种非球面透镜的设计方法，包括：采用一半径为R1的面作为非球面透镜的球面部分；

2.The invention embodiment discloses a design method of an aspherical lens, which comprises: the surface with the semidiameter of R1 is taken as the spherical surface part of the aspherical lens;

本发明实施例公开了一种非球面透镜的设计方法，包括：采用一半径为R1的面作为非球面透镜的球面部分；

3.In geometry, the semidiameter 半径 is often used in various formulas.

在几何学中，semidiameter 半径 常常用于各种公式中。

4.In astronomy, the semidiameter 半径 of a planet is crucial for understanding its size.

在天文学中，行星的semidiameter 半径 对于理解其大小至关重要。

5.To find the area of a circle, you need to know the semidiameter 半径 first.

要找出圆的面积，首先需要知道semidiameter 半径。

6.The semidiameter 半径 of the Earth helps scientists calculate its gravitational pull.

地球的semidiameter 半径 帮助科学家计算其引力。

7.The radius of the circle is half of its diameter, so the semidiameter 半径 can be calculated easily.

圆的半径是直径的一半，因此可以很容易地计算出semidiameter 半径。

作文

In the study of geometry and astronomy, the term semidiameter is frequently encountered. It refers to half the diameter of a circle or sphere, which is a crucial concept in understanding various physical phenomena. The semidiameter plays an essential role in calculations involving the size and scale of celestial bodies, as well as in the design of various engineering projects on Earth.To illustrate the importance of the semidiameter, consider the example of the Earth itself. The average diameter of our planet is about 12,742 kilometers. Therefore, the semidiameter of the Earth is approximately 6,371 kilometers. This measurement is not only vital for calculating the volume and surface area of the Earth but also helps scientists understand gravitational forces and how they affect objects in space.In astronomy, the semidiameter is particularly significant when observing distant stars and planets. For instance, when astronomers measure the light emitted from a star, they often need to calculate its semidiameter to determine its distance from Earth. By knowing the semidiameter of a star, they can apply mathematical formulas that relate brightness to distance, allowing them to map the universe more accurately.Moreover, in engineering, architects and builders utilize the concept of semidiameter when designing structures that require circular elements, such as domes or arches. Understanding the semidiameter helps ensure that these structures are both aesthetically pleasing and structurally sound. For example, if an architect is designing a dome with a diameter of 20 meters, they would need to know that the semidiameter is 10 meters to create accurate blueprints and models.The relevance of the semidiameter extends beyond theoretical applications. In practical scenarios, such as in the manufacturing of spherical objects like balls or globes, knowing the semidiameter is crucial for quality control. Manufacturers must ensure that their products meet specific size requirements, which are often dictated by the semidiameter measurement. This ensures consistency and functionality in the final product.Additionally, the semidiameter has implications in fields like physics and biology. For instance, in physics, the semidiameter of particles can influence their behavior in different environments, such as in fluid dynamics. In biology, understanding the semidiameter of cells can help researchers study cell growth and division, which is vital for advancements in medical science.In conclusion, the term semidiameter is more than just a mathematical concept; it is a fundamental aspect of various scientific disciplines. From astronomy to engineering, the semidiameter provides essential insights that help us understand the world around us. As we continue to explore and innovate, the significance of the semidiameter will undoubtedly remain a cornerstone of scientific inquiry and practical application.

在几何和天文学的研究中，术语semidiameter经常被提到。它指的是一个圆或球体的直径的一半，这是理解各种物理现象的关键概念。semidiameter在涉及天体的大小和规模的计算中发挥着重要作用，同时也在地球上各种工程项目的设计中至关重要。为了说明semidiameter的重要性，考虑地球本身的例子。我们星球的平均直径约为12,742公里。因此，地球的semidiameter约为6,371公里。这一测量不仅对计算地球的体积和表面积至关重要，还帮助科学家理解引力如何影响太空中的物体。在天文学中，当观察遥远的恒星和行星时，semidiameter尤其重要。例如，当天文学家测量恒星发出的光时，他们通常需要计算其semidiameter以确定其与地球的距离。通过了解恒星的semidiameter，他们可以应用与亮度和距离相关的数学公式，从而更准确地绘制宇宙图。此外，在工程学中，建筑师和施工者在设计需要圆形元素的结构（如穹顶或拱门）时，会利用semidiameter的概念。理解semidiameter有助于确保这些结构既美观又结构坚固。例如，如果建筑师正在设计一个直径为20米的穹顶，他们需要知道semidiameter为10米，以创建准确的蓝图和模型。semidiameter的相关性超越了理论应用。在实际场景中，例如在制造球形物体（如球或地球仪）时，了解semidiameter对质量控制至关重要。制造商必须确保其产品符合特定的尺寸要求，这些要求通常由semidiameter测量决定。这确保了最终产品的一致性和功能性。此外，semidiameter在物理和生物等领域也具有重要意义。例如，在物理学中，粒子的semidiameter可能会影响它们在不同环境中的行为，如流体动力学。在生物学中，了解细胞的semidiameter可以帮助研究人员研究细胞的生长和分裂，这对于医学科学的进步至关重要。总之，术语semidiameter不仅仅是一个数学概念；它是各种科学学科的基础方面。从天文学到工程学，semidiameter提供了重要的见解，帮助我们理解周围的世界。随着我们继续探索和创新，semidiameter的重要性无疑将继续作为科学探究和实际应用的基石。