astronomical cross bearings

简明释义

交叉天文方位线

英英释义

例句

1.The navigator used astronomical cross bearings to determine the ship's position accurately.

导航员使用天文交叉方位角来准确确定船的位置。

2.In sailing, astronomical cross bearings are essential for navigation at night.

在航海中，天文交叉方位角对于夜间导航至关重要。

3.By taking astronomical cross bearings, the crew was able to plot their course through the stars.

通过进行天文交叉方位角测量，船员能够通过星星绘制航线。

4.Using astronomical cross bearings, the team was able to find their way back to port.

利用天文交叉方位角，团队能够找到回港的路。

5.The captain explained how astronomical cross bearings can enhance our understanding of celestial navigation.

船长解释了如何通过天文交叉方位角来增强我们对天体导航的理解。

作文

Navigating the vast oceans has always been a challenge for sailors, especially before the advent of modern technology. One of the key methods used in traditional navigation is the use of celestial bodies to determine one's position at sea. This technique involves what is known as astronomical cross bearings, a term that refers to the practice of taking sightings of two or more celestial bodies to establish a precise location on the Earth’s surface. By using a sextant, sailors could measure the angle between the horizon and a star or the sun, thus allowing them to calculate their latitude and longitude accurately.The concept of astronomical cross bearings is rooted in the principles of astronomy and geometry. When a sailor takes a sighting of a celestial body, they are essentially creating a triangle between their location, the celestial body, and the center of the Earth. By measuring the angles involved and knowing the time of the observation, navigators can utilize trigonometric calculations to pinpoint their geographic location. This method was particularly useful during the Age of Exploration when explorers ventured into uncharted waters.Furthermore, the importance of astronomical cross bearings cannot be overstated. It provided sailors with a reliable means of navigation long before GPS systems were invented. The ability to navigate by the stars gave adventurers the confidence to sail across the open seas, leading to the discovery of new lands and trade routes. Many famous explorers, including Christopher Columbus and Ferdinand Magellan, relied heavily on this technique to guide their voyages.In addition to its historical significance, the practice of astronomical cross bearings is still taught in navigation courses today. While modern technology has drastically changed the way we navigate, understanding the fundamentals of celestial navigation remains a crucial skill for sailors. It serves as a backup method in case electronic systems fail and fosters a deeper appreciation for the art of navigation.Moreover, the beauty of astronomical cross bearings lies not only in its practicality but also in its connection to the natural world. Observing celestial bodies and understanding their movements can evoke a sense of wonder and curiosity about the universe. Sailors often found solace in the night sky, using it as a guide and a source of inspiration during their journeys.In conclusion, astronomical cross bearings represent a vital aspect of maritime navigation that has stood the test of time. From its historical roots in the Age of Exploration to its relevance in modern navigation training, this technique exemplifies the ingenuity of human beings in their quest to explore the unknown. As we continue to advance technologically, it is essential to remember and respect the traditional methods that paved the way for our current capabilities. Understanding astronomical cross bearings not only enhances our navigation skills but also connects us to the rich history of exploration and discovery that defines our collective human experience.

在广阔的海洋中航行一直是水手们面临的挑战，尤其是在现代技术出现之前。传统导航中使用的关键方法之一就是利用天体来确定在海上的位置。这种技术涉及到所谓的天文交叉方位角，这个术语指的是通过观察两个或多个天体来建立地球表面精确位置的做法。通过使用六分仪，水手可以测量地平线与星星或太阳之间的角度，从而准确计算他们的纬度和经度。天文交叉方位角的概念根植于天文学和几何学的原理。当水手观察一个天体时，他们实际上是在其位置、天体和地球中心之间创建一个三角形。通过测量涉及的角度并知道观察的时间，导航员可以利用三角函数计算来确定他们的地理位置。这种方法在探索时代尤为有用，当时探险者们冒险进入未知水域。此外，天文交叉方位角的重要性不容小觑。它为水手提供了一种可靠的导航方式，早在GPS系统发明之前。通过星星导航的能力使冒险者能够自信地航行在开放的海洋上，导致新土地和贸易路线的发现。许多著名的探险家，包括克里斯托弗·哥伦布和费迪南德·麦哲伦，严重依赖这种技术来指导他们的航行。除了历史意义外，天文交叉方位角的实践至今仍在导航课程中教授。虽然现代技术已经极大地改变了我们的导航方式，但理解天文导航的基本原理仍然是水手的一项重要技能。它作为电子系统故障时的备份方法，并培养对导航艺术的更深层次的欣赏。此外，天文交叉方位角的美不仅在于其实用性，还在于它与自然世界的联系。观察天体并理解它们的运动可以唤起人们对宇宙的敬畏和好奇心。水手们常常在夜空中找到安慰，将其作为引导和灵感的来源。总之，天文交叉方位角代表了航海导航的一个重要方面，经受住了时间的考验。从探索时代的历史根基到现代导航培训中的相关性，这一技术体现了人类在探索未知领域过程中所表现出的智慧。随着我们技术的不断进步，重要的是要记住并尊重那些为我们当前能力铺平道路的传统方法。理解天文交叉方位角不仅增强了我们的导航技能，也将我们与定义我们共同人类经验的丰富探索和发现历史联系起来。