great circle

简明释义

大圆大圈

英英释义

例句

1.Sailing around the world requires knowledge of great circles for efficient navigation.

环游世界的航行需要了解大圆以便高效导航。

2.When planning long-distance flights, airlines often use great circles to optimize routes.

在规划长途航班时，航空公司通常使用大圆来优化航线。

3.The shortest distance between two points on the globe is along a great circle.

地球上两点之间的最短距离是沿着大圆。

4.The concept of great circles is essential in geodesy and cartography.

在大地测量和制图学中，大圆的概念是至关重要的。

5.To calculate the distance between cities, you can use the great circle distance formula.

要计算城市之间的距离，可以使用大圆距离公式。

作文

The concept of the great circle is fundamental in navigation and geography. A great circle is defined as the largest possible circle that can be drawn on a sphere, which divides the sphere into two equal halves. This means that any point on the circumference of a great circle is equidistant from the center of the sphere. In practical terms, when we think about the Earth, the great circle represents the shortest path between two points on its surface. For instance, if you were to travel from New York City to London, one might assume that flying directly east or west would be the fastest route. However, due to the curvature of the Earth, the most efficient flight path actually follows a great circle route. This route may appear curved on a flat map, but it is the shortest distance when measured across the globe. Understanding this principle is essential for pilots and navigators who seek to minimize travel time and fuel consumption.The significance of the great circle extends beyond aviation. It plays a crucial role in maritime navigation as well. Ships utilize great circle routes to optimize their journeys across oceans. For example, when sailing from San Francisco to Tokyo, the vessel will follow a great circle route over the Pacific Ocean, ensuring that it takes the most direct path available. This not only saves time but also reduces the amount of fuel needed for the journey.In addition to its applications in transportation, the great circle is also important in fields such as astronomy and geodesy. Astronomers use great circles to describe the paths of celestial objects in the sky. The celestial equator and the ecliptic are both examples of great circles that help astronomers locate stars and planets. Similarly, geodesists, who study the Earth's shape and gravitational field, rely on great circles to measure distances and angles accurately across the planet's surface.Moreover, the concept of the great circle can be applied in various scientific fields. In climate science, researchers might use great circles to model wind patterns and ocean currents, as these natural phenomena often follow the curvature of the Earth. By understanding how these forces operate along great circles, scientists can better predict weather patterns and climate changes.In conclusion, the great circle is an essential concept that influences various aspects of our world, from navigation to science. Its ability to represent the shortest distance between two points on a sphere makes it invaluable for travelers and researchers alike. As we continue to explore our planet and beyond, the understanding of great circles will remain a vital tool in our quest for knowledge and efficiency. Whether in the skies or on the seas, the principles of the great circle will guide us on our journeys, reminding us of the intricate connections that exist within our vast universe.

大圆的概念在导航和地理学中是基础性的。大圆被定义为可以在球体上绘制的最大圆，能够将球体分成两个相等的部分。这意味着大圆的周长上的任何一点都与球体的中心等距。从实际角度来看，当我们考虑地球时，大圆代表了其表面上两点之间的最短路径。例如，如果你要从纽约市旅行到伦敦，人们可能会认为直接向东或向西飞行是最快的路线。然而，由于地球的曲率，最有效的飞行路径实际上遵循大圆路线。这个路线在平面地图上可能看起来是弯曲的，但在测量全球时，它是最短的距离。理解这一原则对寻求减少旅行时间和燃料消耗的飞行员和导航员至关重要。大圆的重要性不仅限于航空。它在海洋导航中也发挥着关键作用。船只利用大圆航线来优化跨越海洋的旅程。例如，从旧金山航行到东京时，船只将在太平洋上沿着大圆航线航行，以确保它走的是最直接的可用路径。这不仅节省了时间，还减少了旅程所需的燃料量。除了在运输中的应用外，大圆在天文学和大地测量等领域也很重要。天文学家使用大圆来描述天空中天体的轨迹。天球赤道和黄道都是帮助天文学家定位恒星和行星的大圆示例。同样，研究地球形状和重力场的大地测量学家依赖大圆来准确测量地球表面的距离和角度。此外，大圆的概念也可以应用于各种科学领域。在气候科学中，研究人员可能使用大圆来模拟风模式和海洋电流，因为这些自然现象通常沿着地球的曲率运行。通过理解这些力量如何沿着大圆运作，科学家们可以更好地预测天气模式和气候变化。总之，大圆是一个基本概念，影响着我们世界的各个方面，从导航到科学。它代表了球体上两点之间的最短距离，使其对旅行者和研究人员来说都是无价之宝。随着我们继续探索我们的星球及其以外的地方，对大圆的理解将继续成为我们追求知识和效率的重要工具。无论是在天空中还是在海洋上，大圆的原则将引导我们踏上旅程，提醒我们存在于广袤宇宙中的复杂联系。