elliptic orbit

简明释义

椭圆轨迹

英英释义

例句

1.The planet travels in an elliptic orbit around the sun, which means its distance from the sun varies over time.

这颗行星在太阳周围沿着椭圆轨道运行，这意味着它与太阳的距离随时间变化。

2.An elliptic orbit allows spacecraft to conserve fuel during long missions by using gravitational assists.

通过使用引力助推，椭圆轨道使宇宙飞船在长期任务中节省燃料。

3.Understanding the mechanics of an elliptic orbit is crucial for predicting satellite paths.

理解椭圆轨道的力学对于预测卫星轨迹至关重要。

4.Satellites are often placed in an elliptic orbit to optimize their coverage of the Earth's surface.

卫星通常被放置在椭圆轨道上，以优化对地球表面的覆盖。

5.The comet has a highly elongated elliptic orbit that brings it close to the sun every 76 years.

这颗彗星有一个高度拉长的椭圆轨道，每76年会靠近太阳一次。

作文

The concept of an elliptic orbit is fundamental in the field of astronomy and physics. It describes the path that celestial bodies take as they move under the influence of gravitational forces. The shape of this orbit is similar to an elongated circle, known as an ellipse. Understanding elliptic orbits is crucial for comprehending how planets, moons, and artificial satellites travel through space.Historically, the study of elliptic orbits can be traced back to the early 17th century when Johannes Kepler proposed his three laws of planetary motion. His first law states that planets move in elliptical orbits with the sun at one of the foci. This was a revolutionary idea at the time, as it contradicted the long-held belief that celestial bodies moved in perfect circular paths. Kepler's work laid the foundation for Isaac Newton's law of universal gravitation, which further explained why elliptic orbits occur.The mathematics behind elliptic orbits involves conic sections, where an ellipse is one of the shapes formed by the intersection of a plane and a cone. An ellipse is defined by its semi-major axis and semi-minor axis, which determine its size and shape. The eccentricity of an ellipse quantifies how much it deviates from being circular; a perfectly circular orbit has an eccentricity of zero, while a highly elongated ellipse approaches an eccentricity of one.In practical terms, understanding elliptic orbits allows scientists and engineers to predict the positions of celestial bodies at any given time. For instance, when launching a satellite, engineers must calculate the desired elliptic orbit to ensure that the satellite reaches its intended altitude and trajectory. These calculations take into account various factors such as gravitational pull, speed, and the mass of the satellite.Moreover, the study of elliptic orbits is not limited to our solar system. It extends to binary star systems, where two stars orbit around a common center of mass. The dynamics of these systems can be quite complex, but they often exhibit elliptic orbits as well. Observing these systems provides valuable insights into stellar evolution and the formation of galaxies.In conclusion, the term elliptic orbit encapsulates a key concept in our understanding of the universe. From the historical contributions of Kepler and Newton to modern applications in satellite technology, elliptic orbits play a vital role in both theoretical and practical aspects of astronomy and physics. As we continue to explore the cosmos, the principles governing elliptic orbits will remain essential for unlocking the mysteries of celestial mechanics and the behavior of objects in space.

“椭圆轨道”这一概念在天文学和物理学领域中是基础性的。它描述了在引力作用下，天体所采取的路径。这种轨道的形状类似于一个拉长的圆，称为椭圆。理解“椭圆轨道”对理解行星、月球和人造卫星如何在太空中移动至关重要。历史上，“椭圆轨道”的研究可以追溯到17世纪初，当时约翰内斯·开普勒提出了他的行星运动三大定律。他的第一定律指出，行星沿着以太阳为一个焦点的椭圆轨道运动。这在当时是一个革命性的观点，因为它与长期以来认为天体沿完美圆形路径运动的信念相矛盾。开普勒的工作为艾萨克·牛顿的万有引力定律奠定了基础，后者进一步解释了为什么会出现“椭圆轨道”。“椭圆轨道”的数学原理涉及圆锥曲线，其中椭圆是平面与圆锥相交形成的形状之一。椭圆由其半长轴和半短轴定义，这决定了其大小和形状。椭圆的离心率量化了其偏离圆形的程度；完美的圆形轨道的离心率为零，而高度拉长的椭圆接近离心率为一。在实际应用中，理解“椭圆轨道”使科学家和工程师能够预测天体在任何给定时间的位置。例如，在发射卫星时，工程师必须计算所需的“椭圆轨道”，以确保卫星达到预期的高度和轨迹。这些计算考虑了多种因素，如引力、速度和卫星的质量。此外，“椭圆轨道”的研究不仅限于我们的太阳系。它还扩展到双星系统，其中两颗恒星围绕共同的质心运动。这些系统的动态可能相当复杂，但它们通常也表现出“椭圆轨道”。观察这些系统提供了关于恒星演化和星系形成的宝贵见解。总之，术语“椭圆轨道”概括了我们对宇宙理解的一个关键概念。从开普勒和牛顿的历史贡献到现代卫星技术中的应用，“椭圆轨道”在天文学和物理学的理论和实践方面都发挥着重要作用。随着我们继续探索宇宙，支配“椭圆轨道”的原则将仍然是揭开天体力学和空间中物体行为奥秘的关键。