subastral point

简明释义

星下点某瞬间地理位置

英英释义

例句

1.Astronomers often use the term subastral point to describe the location on Earth directly beneath a celestial body.

天文学家常用术语下天点来描述在天体正下方的地球位置。

2.To predict weather patterns accurately, meteorologists consider the subastral point of weather satellites.

为了准确预测天气模式，气象学家考虑天气卫星的下天点。

3.The subastral point can be crucial for navigation systems that rely on satellite data.

对于依赖卫星数据的导航系统来说，下天点可能至关重要。

4.The satellite's orbit was calculated to ensure it would pass directly over the subastral point of the target area.

卫星的轨道被计算为确保它将直接经过目标区域的下天点。

5.During the solar eclipse, the subastral point moved quickly across the Earth's surface.

在日食期间，下天点迅速穿过地球表面。

作文

The concept of a subastral point is often used in discussions about astronomy and navigation. To understand its significance, we must first explore the relationship between celestial bodies and our position on Earth. The subastral point refers to the point on the Earth's surface that is directly beneath a celestial body, such as the sun or a star. This point is crucial for various applications, including satellite positioning, navigation, and even understanding the patterns of day and night. In essence, when we think about how we perceive the sky, we realize that our view is influenced by our location on Earth. For instance, during the day, the sun appears to move across the sky, creating a cycle of light and darkness. The subastral point helps us comprehend where the sun is positioned relative to our geographic location at any given moment. When the sun is at its zenith, it is directly above the subastral point, indicating the highest point in the sky from that specific location.Furthermore, the concept of the subastral point extends beyond just the sun. It can apply to other celestial bodies as well. For example, if we consider the moon, its subastral point would be the location on Earth where the moon is directly overhead. This is significant for astronomers who track the movement of the moon and its phases, as different locations experience different lunar phenomena based on the moon's position in relation to their subastral point.In navigation, understanding the subastral point is vital for determining one's position on Earth. Sailors and aviators often use celestial navigation techniques, which involve calculating their position based on the stars and other celestial bodies. By knowing the subastral point of these bodies, navigators can adjust their course to reach their destination accurately. This method has been used for centuries, long before modern technology made navigation easier. Moreover, the subastral point plays a role in timekeeping. The Earth's rotation causes different areas to experience sunlight and darkness at different times. By understanding the subastral point of the sun, we can determine local noon for any location on Earth. This is the time when the sun is at its highest point in the sky, which corresponds to the subastral point directly below it. This knowledge has been essential for agricultural practices, religious rituals, and daily activities throughout human history.In conclusion, the subastral point is more than just a technical term; it represents a fundamental connection between our planet and the cosmos. It aids in navigation, timekeeping, and our understanding of celestial movements. As we continue to explore and learn about the universe, the subastral point remains a key concept that bridges the gap between Earth and the vast expanse of space above us. Understanding this term enriches our knowledge of astronomy and enhances our appreciation for the intricate dance of celestial bodies in the night sky.

“subastral point”这个概念通常用于天文学和导航的讨论中。要理解它的重要性，我们首先必须探索天体与我们在地球上位置之间的关系。subastral point指的是地球表面上直接位于天体（如太阳或星星）正下方的点。这个点对于各种应用至关重要，包括卫星定位、导航，甚至理解昼夜的模式。从本质上讲，当我们思考如何感知天空时，我们意识到我们的视角受到我们在地球上位置的影响。例如，在白天，太阳似乎在天空中移动，创造出光明与黑暗的循环。subastral point帮助我们理解太阳在特定时刻相对于我们地理位置的定位。当太阳在其天顶时，它正好在subastral point上方，表示从该特定位置看，太阳在天空中的最高点。此外，subastral point的概念不仅限于太阳。它也可以应用于其他天体。例如，如果我们考虑月亮，它的subastral point将是月亮正好在地球上方的位置。这对于追踪月亮运动及其相位的天文学家来说是重要的，因为不同的位置根据月亮相对于它们的subastral point的位置经历不同的月相现象。在导航中，理解subastral point对于确定一个人在地球上的位置至关重要。水手和飞行员经常使用天文导航技术，这涉及根据星星和其他天体计算他们的位置。通过了解这些天体的subastral point，导航员可以调整航向，以准确到达目的地。这种方法已经被使用了几个世纪，早于现代技术使导航变得更加容易。此外，subastral point在计时中也发挥着作用。地球的自转导致不同地区在不同时间经历阳光和黑暗。通过理解太阳的subastral point，我们可以确定地球上任何地方的当地正午。这是太阳在天空中最高点的时间，与其直接在subastral point下方相对应。这一知识对农业实践、宗教仪式和人类历史上的日常活动至关重要。总之，subastral point不仅仅是一个技术术语；它代表了我们星球与宇宙之间的基本联系。它有助于导航、计时以及我们对天体运动的理解。随着我们继续探索和学习宇宙，subastral point仍然是一个关键概念，弥合了地球与我们头顶浩瀚空间之间的鸿沟。理解这个术语丰富了我们对天文学的知识，并增强了我们对夜空中天体错综复杂舞蹈的欣赏。