navigation sextant

简明释义

航用六分仪

英英释义

例句

1.A navigation sextant is essential for traditional navigation methods.

对于传统导航方法来说，导航六分仪是必不可少的。

2.During the training, we learned how to read a navigation sextant accurately.

在培训期间，我们学习了如何准确读取导航六分仪。

3.The sailor used a navigation sextant to determine their position at sea.

水手使用导航六分仪来确定他们在海上的位置。

4.With the help of a navigation sextant, the captain was able to plot a course through the stars.

借助导航六分仪，船长能够通过星星绘制航线。

5.He carefully adjusted the navigation sextant to measure the angle of the sun.

他小心地调整导航六分仪以测量太阳的角度。

作文

The history of navigation is as old as humanity itself, and one of the most significant tools that have aided sailors and explorers in their journeys across the vast oceans is the navigation sextant. This remarkable instrument has played a crucial role in maritime navigation, allowing navigators to determine their position by measuring the angle between celestial bodies and the horizon. The navigation sextant is not just a tool; it represents the ingenuity of human beings in their quest to explore the unknown and traverse the seas with confidence.The navigation sextant was developed in the 18th century, building on earlier instruments like the astrolabe and the quadrant. Its design consists of a circular frame with a movable arm, known as the index arm, which is equipped with a sighting mechanism. By aligning the instrument with a celestial body, such as the sun or stars, navigators can measure the angle of elevation, known as altitude. This measurement is vital for determining latitude, while the calculation of time allows for the determination of longitude.One of the most fascinating aspects of the navigation sextant is its precision. Even in the hands of a skilled navigator, small errors can lead to significant discrepancies in position. Therefore, understanding how to properly use and maintain a sextant is essential for accurate navigation. Sailors must be trained in reading the instrument, accounting for factors such as refraction and parallax, which can affect readings.In addition to its practical applications, the navigation sextant also holds historical significance. It symbolizes an era of exploration when sailors ventured into uncharted waters, driven by curiosity and the desire for discovery. The voyages of famous explorers like Captain James Cook and Ferdinand Magellan were made possible, in part, due to their mastery of this instrument. Their journeys not only expanded our geographical knowledge but also fostered cultural exchanges that shaped the world.Despite the advent of modern technology, including GPS and electronic navigation systems, the navigation sextant remains relevant today. Many sailors still carry a sextant as a backup navigation tool, especially when sailing in remote areas where electronic devices may fail. Furthermore, learning to use a sextant is a valuable skill that connects modern navigators with their historical counterparts, reminding them of the importance of traditional navigation techniques.In conclusion, the navigation sextant is more than just a tool for measuring angles; it is a testament to human ingenuity and exploration. Its development revolutionized maritime navigation, enabling explorers to chart new territories and connect distant lands. Today, even in our technologically advanced world, the sextant serves as a reminder of our rich maritime heritage and the spirit of adventure that drives us to explore the unknown. As we continue to navigate the complexities of our modern lives, let us not forget the lessons learned from the past and the tools that have guided us through the ages. The navigation sextant will always hold a special place in the annals of exploration and navigation, symbolizing the enduring quest for knowledge and discovery.

导航历史与人类本身一样古老，而在航海者和探险家跨越广阔海洋的旅程中，最重要的工具之一就是导航六分仪。这件非凡的仪器在海洋导航中发挥了关键作用，使导航员能够通过测量天体与地平线之间的角度来确定自己的位置。导航六分仪不仅仅是一个工具；它代表了人类在探索未知、勇敢穿越海洋过程中的聪明才智。导航六分仪是在18世纪发展起来的，基于早期的仪器如天文仪和象限仪。它的设计包括一个圆形框架和一个可移动的臂，称为指示臂，配有瞄准机制。通过将仪器与天体（如太阳或星星）对齐，导航员可以测量高度，即仰角。这一测量对于确定纬度至关重要，而时间的计算则可以确定经度。导航六分仪最迷人的方面之一是其精确性。即使在熟练的导航员手中，小错误也可能导致位置上的重大差异。因此，理解如何正确使用和维护六分仪对于准确导航至关重要。水手必须接受阅读仪器的培训，并考虑折射和视差等因素，这些因素可能影响读数。除了其实际应用外，导航六分仪还具有历史意义。它象征着一个探索的时代，当时的水手们勇敢地进入未被探索的水域，驱动他们的是好奇心和发现的渴望。著名探险家如詹姆斯·库克船长和费迪南德·麦哲伦的航行部分得益于他们对这一仪器的掌握。他们的航程不仅扩展了我们的地理知识，还促进了塑造世界的文化交流。尽管现代技术的出现，包括GPS和电子导航系统，导航六分仪今天仍然相关。许多水手在航行到偏远地区时仍携带六分仪作为备用导航工具，因为在这些地方，电子设备可能会失效。此外，学习使用六分仪是一项宝贵的技能，它将现代导航员与他们的历史同行者连接起来，提醒他们传统导航技术的重要性。总之，导航六分仪不仅仅是一个测量角度的工具；它是人类创造力和探索精神的证明。它的发展彻底改变了海洋导航，使探险者能够绘制新领土并连接遥远的土地。即使在我们这个技术先进的世界中，六分仪也提醒我们丰富的海洋遗产和推动我们探索未知的冒险精神。当我们继续在现代生活的复杂性中航行时，让我们不忘从过去学到的教训以及引导我们走过岁月的工具。导航六分仪将在探索和导航的史册中永远占有一席之地，象征着对知识和发现的持久追求。