great circle sailing

简明释义

大圆航法

英英释义

例句

1.The pilot explained the benefits of great circle sailing during the pre-flight briefing.

在起飞前的简报中，飞行员解释了大圆航线的好处。

2.When planning a long-distance flight, pilots often use great circle sailing to minimize fuel consumption.

在规划长途飞行时，飞行员通常使用大圆航线来最小化燃料消耗。

3.The concept of great circle sailing is essential for modern navigation systems.

对于现代导航系统来说，大圆航线的概念至关重要。

4.Using great circle sailing can save several hours on a transcontinental flight.

使用大圆航线可以在跨洲飞行中节省几个小时。

5.Sailors learn about great circle sailing to navigate efficiently across oceans.

水手学习大圆航线以高效地穿越海洋。

作文

Great circle sailing is a navigational method that has been used by mariners for centuries. It refers to the practice of plotting a course along the arc of a great circle, which is the shortest distance between two points on the surface of a sphere. This technique is particularly important in maritime navigation because it allows ships to travel efficiently over long distances. When sailors embark on long voyages, they often face the challenge of how to minimize their travel time and fuel consumption. By utilizing great circle sailing, they can achieve these goals effectively. To understand why great circle sailing is so vital, one must first grasp the concept of a great circle. A great circle is formed when a plane passes through the center of a sphere, dividing it into two equal halves. The equator is a prime example of a great circle on Earth. However, any circle that divides the globe into two equal parts can be considered a great circle. This includes lines of longitude, which run from the North Pole to the South Pole. When plotted on a flat map, the path of a great circle appears as a curved line, which can be misleading for navigators who are accustomed to thinking in straight lines.The significance of great circle sailing becomes even clearer when we consider the vastness of the oceans. For instance, if a ship were to sail from New York City to Tokyo, the most direct route would not be a straight line on a flat map. Instead, it would follow the curve of the Earth, tracing the arc of a great circle. This means that while the ship may appear to be veering off course on a two-dimensional map, it is actually taking the most efficient path available.In modern times, with the advent of advanced technology, the principles of great circle sailing have been further refined. Navigation systems like GPS utilize complex algorithms to calculate the best routes based on great circle paths. These systems take into account various factors such as wind patterns, ocean currents, and weather conditions to optimize sailing routes. As a result, mariners can save both time and resources, making their journeys more sustainable.However, great circle sailing is not without its challenges. Navigators must be aware of potential hazards along the route, including islands, reefs, and other obstructions. Additionally, the curvature of the Earth can lead to discrepancies in distance calculations, especially over long voyages. Therefore, while the theory behind great circle sailing is sound, practical application requires skill and experience.In conclusion, great circle sailing is an essential aspect of maritime navigation that enables sailors to traverse the world's oceans efficiently. By understanding the principles of great circles and applying them in real-world scenarios, mariners can optimize their routes, conserve fuel, and ultimately enhance the safety and sustainability of their voyages. As technology continues to evolve, the importance of great circle sailing will undoubtedly remain a cornerstone of effective navigation at sea.

大圆航行是一种海上导航方法，几个世纪以来一直被水手们使用。它指的是沿着大圆的弧线绘制航线的做法，这是球面上两点之间的最短距离。这项技术在海洋导航中尤为重要，因为它允许船只在长距离航行中高效地行驶。当水手开始长途航行时，他们常常面临如何最小化旅行时间和燃料消耗的挑战。通过利用大圆航行，他们可以有效地实现这些目标。要理解为什么大圆航行如此重要，首先必须掌握大圆的概念。大圆是当一个平面通过球体的中心时形成的，它将球体分成两个相等的部分。赤道就是地球上大圆的一个典型例子。然而，任何将地球分成两个相等部分的圆都可以被视为大圆。这包括从北极到南极的经线。当在平面地图上绘制时，大圆的路径表现为一条弯曲的线，这对习惯于用直线思考的导航员来说可能会产生误导。当我们考虑到海洋的广阔时，大圆航行的重要性变得更加明显。例如，如果一艘船要从纽约市航行到东京，最直接的路线并不是平面地图上的直线。相反，它将沿着地球的曲线航行，描绘出大圆的弧线。这意味着尽管船在二维地图上似乎偏离了航向，但实际上它正在采取可用的最有效路径。在现代，随着先进技术的出现，大圆航行的原则得到了进一步完善。导航系统如GPS利用复杂的算法来计算基于大圆路径的最佳航线。这些系统考虑了风向、海流和天气条件等各种因素，以优化航行路线。因此，水手可以节省时间和资源，使他们的航程更加可持续。然而，大圆航行并非没有挑战。导航员必须意识到沿途可能存在的危险，包括岛屿、暗礁和其他障碍。此外，地球的曲率可能导致距离计算上的差异，尤其是在长途航行中。因此，虽然大圆航行背后的理论是合理的，但实际应用需要技能和经验。总之，大圆航行是海洋导航的重要组成部分，使水手能够高效地穿越世界的海洋。通过理解大圆的原理并将其应用于现实场景中，水手可以优化他们的航线，节约燃料，并最终增强航行的安全性和可持续性。随着技术的不断发展，大圆航行的重要性无疑将继续成为有效海上导航的基石。