orthodromic line

简明释义

大圆航线

英英释义

例句

1.In geodesy, understanding the orthodromic line is essential for accurate distance measurement.

在大地测量学中，理解正航线对于准确的距离测量至关重要。

2.The shortest distance between two points on a sphere is called the orthodromic line.

在球体上，两点之间的最短距离称为正航线。

3.Sailing navigators use the concept of orthodromic line to chart their courses.

航海导航员使用正航线的概念来绘制航线。

4.When planning a flight, pilots often calculate the orthodromic line to save fuel.

在规划飞行时，飞行员通常计算正航线以节省燃料。

5.The orthodromic line can be visualized as a great circle route on a globe.

正航线可以被视为地球仪上的大圆航线。

作文

In the field of navigation and geography, understanding the concept of an orthodromic line is crucial for accurate route planning and distance measurement. An orthodromic line refers to the shortest path between two points on the surface of a sphere, which is particularly relevant when considering the Earth as a nearly spherical object. This concept contrasts with the more familiar straight line one might draw on a flat map, which can lead to misunderstandings about actual distances and travel times. For instance, when plotting a course for an airplane flying from New York to London, pilots do not simply draw a straight line on a flat map. Instead, they take into account the curvature of the Earth, resulting in a flight path that follows an orthodromic line. This path may appear curved when viewed on a two-dimensional map, but it is indeed the most efficient route in terms of distance. As a result, understanding how to calculate and navigate using orthodromic lines is essential for pilots and navigators alike.The mathematical foundation of the orthodromic line lies in spherical geometry. To determine the shortest distance between two points, one must consider the great circle that connects them. A great circle is any circle drawn on a sphere that has the same center and radius as the sphere itself. Thus, the orthodromic line is essentially a segment of this great circle. For practical applications, navigators often use formulas derived from spherical trigonometry to compute distances and bearings along these paths.In addition to aviation, the concept of orthodromic lines also plays a significant role in maritime navigation. Ships traveling across oceans utilize these shortest paths to save fuel and time. When navigating through vast bodies of water, sailors must account for various factors such as currents, winds, and weather conditions, but the initial route planning often begins with identifying the orthodromic line between their departure and destination points.Furthermore, the relevance of orthodromic lines extends beyond just navigation. In modern technology, GPS systems rely heavily on these principles to provide accurate location data and route information. When a user inputs a destination into a GPS device, the system calculates the best route by determining the orthodromic line and adjusting for real-time factors such as traffic or road conditions, ultimately guiding the user along the most efficient path.In conclusion, the significance of the orthodromic line cannot be overstated in various fields, especially in navigation and transportation. Understanding this concept allows for improved efficiency in travel and logistics, making it a fundamental aspect of geography and mathematics. Whether in aviation, maritime travel, or everyday GPS usage, the orthodromic line serves as a critical tool for navigating our world effectively.

在导航和地理学领域，理解“正距线”的概念对于准确的路线规划和距离测量至关重要。“正距线”是指在球体表面上两点之间的最短路径，这在考虑地球作为一个近乎球形的物体时尤为相关。这个概念与人们在平面地图上绘制的熟悉直线形成对比，这可能导致对实际距离和旅行时间的误解。例如，在规划飞机从纽约飞往伦敦的航线时，飞行员并不会简单地在平面地图上画一条直线。相反，他们会考虑地球的曲率，从而导致飞行路径遵循“正距线”。这个路径在二维地图上看起来可能是弯曲的，但实际上它是在距离上最有效的路线。因此，理解如何计算和导航使用正距线对于飞行员和导航员来说至关重要。“正距线”的数学基础在于球面几何。要确定两点之间的最短距离，必须考虑连接它们的大圆。大圆是指在球体上绘制的任何圆，其中心和半径与球体本身相同。因此，“正距线”本质上是这个大圆的一段。对于实际应用，导航员通常使用源自球面三角学的公式来计算沿这些路径的距离和方位。除了航空之外，“正距线”的概念在海洋导航中也发挥着重要作用。跨越海洋的船只利用这些最短路径来节省燃料和时间。在广阔的水域中航行时，水手必须考虑各种因素，如洋流、风和天气条件，但初步的路线规划通常始于确定出发点和目的地之间的“正距线”。此外，“正距线”的相关性不仅限于导航。在现代技术中，GPS系统在提供准确的位置数据和路线信息时也在很大程度上依赖于这些原则。当用户在GPS设备中输入目的地时，系统通过确定“正距线”并调整实时因素（如交通或道路状况）来计算最佳路线，最终引导用户沿着最有效的路径前进。总之，“正距线”的重要性在各个领域都不容小觑，尤其是在导航和交通运输中。理解这一概念可以提高旅行和物流的效率，使其成为地理和数学的基本方面。无论是在航空、海洋旅行还是日常GPS使用中，“正距线”都是有效导航我们世界的关键工具。