great circle bearing

简明释义

大圆方位

英英释义

例句

1.Before the flight, the crew calculated the great circle bearing 大圆航向 to avoid any potential air traffic.

在飞行之前，机组人员计算了great circle bearing 大圆航向 以避免任何潜在的空中交通。

2.To find the shortest route between two cities, pilots often calculate the great circle bearing 大圆航向 from their departure point.

为了找到两座城市之间的最短路线，飞行员通常会计算从出发点的great circle bearing 大圆航向。

3.In aviation, understanding the great circle bearing 大圆航向 is essential for fuel efficiency and timely arrivals.

在航空中，理解great circle bearing 大圆航向 对于燃油效率和准时到达至关重要。

4.The navigator adjusted the ship's course by referring to the great circle bearing 大圆航向 indicated on the chart.

导航员根据图表上指示的great circle bearing 大圆航向 调整了船只的航向。

5.When sailing across the ocean, it's crucial to maintain the correct great circle bearing 大圆航向 to ensure an efficient journey.

在横渡海洋时，保持正确的great circle bearing 大圆航向 对于确保高效的航行至关重要。

作文

Navigating the vastness of the oceans and skies has always been a challenge for humanity. One of the essential tools that mariners and aviators use is the concept of the great circle bearing, which plays a critical role in determining the shortest path between two points on the globe. Understanding this concept not only enhances our navigational skills but also deepens our appreciation for the complexities of geography and navigation. To grasp the idea of great circle bearing, we must first understand what a great circle is. A great circle is defined as any circle drawn on a sphere that has the same diameter as the sphere itself. In simpler terms, it represents the largest possible circle that can be drawn on the surface of a sphere, dividing it into two equal halves. The equator is the most well-known example of a great circle, but there are many others, including the lines of longitude. When navigating from one location to another, especially over long distances, using a great circle route is crucial. This route represents the shortest distance between two points on the surface of a sphere. For instance, when flying from New York to Tokyo, a direct flight may seem to take a straight line on a flat map, but in reality, the airplane follows a great circle bearing that arcs over the North Pole. This path minimizes fuel consumption and travel time, making it an efficient choice for airlines. The great circle bearing itself is the angle between the north direction and the direction of the great circle at a specific point. It is measured in degrees, with 0° representing true north. This bearing changes as one moves along the great circle, which is why navigators must continuously adjust their course to maintain the correct heading. Modern technology, including GPS systems, has made it easier to calculate and follow these bearings accurately, but understanding the underlying principles remains essential for anyone interested in navigation. In addition to its practical applications in navigation, the concept of great circle bearing also serves as a reminder of the interconnectedness of our world. The Earth is a sphere, and our movements across its surface are influenced by its shape. Whether we are sailing across the Atlantic or flying over the Pacific, the principles of great circles govern our paths. Moreover, the study of great circle bearing opens up discussions about global positioning systems, cartography, and even climate patterns. As we become more aware of our planet's geography, we can better understand phenomena such as ocean currents and wind patterns, which are also influenced by the great circles of the Earth. In conclusion, the great circle bearing is a fundamental concept in navigation that illustrates the shortest distance between two points on the Earth's surface. It involves understanding great circles and their significance in geography. As we navigate through life, both literally and metaphorically, the principles of great circles remind us of the importance of efficiency, direction, and the connections that bind us to one another across the globe. By mastering this concept, we not only improve our navigational skills but also gain a deeper appreciation for the world around us.

在广阔的海洋和天空中航行一直是人类面临的挑战之一。航海者和飞行员使用的基本工具之一是“大圆航向”的概念，这在确定地球上两点之间的最短路径中起着至关重要的作用。理解这一概念不仅增强了我们的导航技能，也加深了我们对地理和导航复杂性的认识。 要理解大圆航向的概念，我们首先必须了解什么是大圆。大圆被定义为在球体上绘制的任何圆，其直径与球体相同。简单来说，它表示可以在球面上绘制的最大圆，分割成两个相等的半球。赤道是大圆最著名的例子，但还有许多其他例子，包括经线。 在从一个地点导航到另一个地点时，尤其是在长距离旅行时，使用大圆路线至关重要。这条路线代表了在球面上两点之间的最短距离。例如，当从纽约飞往东京时，直接航班在平面地图上看似是一条直线，但实际上，飞机沿着一条大圆航向，在北极上方弯曲。这条路径最小化了燃料消耗和旅行时间，使其成为航空公司高效的选择。 大圆航向本身是指某一点上北方方向与大圆方向之间的角度。它以度数为单位测量，0°表示真北。随着沿着大圆移动，这个航向会不断变化，这就是为什么导航员必须不断调整航向以保持正确的航向。现代技术，包括GPS系统，使得准确计算和跟随这些航向变得更加容易，但理解其基础原理对于任何对导航感兴趣的人来说仍然至关重要。 除了在导航中的实际应用外，大圆航向的概念还提醒我们世界的互联性。地球是一个球体，我们在其表面的运动受到其形状的影响。无论我们是在大西洋上航行还是在太平洋上飞行，大圆的原则都支配着我们的路径。 此外，研究大圆航向也引发了关于全球定位系统、制图学甚至气候模式的讨论。当我们对地球的地理有更多了解时，我们可以更好地理解海洋流和风模式等现象，这些现象也受到地球大圆的影响。 总之，大圆航向是导航中的一个基本概念，展示了地球表面两点之间的最短距离。它涉及理解大圆及其在地理中的重要性。当我们在生活中，无论是字面上还是比喻上航行时，大圆的原则提醒我们效率、方向以及将我们彼此联系在一起的纽带的重要性。通过掌握这一概念，我们不仅提高了导航技能，还对周围的世界有了更深刻的认识。