marine sextant

简明释义

航海六分仪

英英释义

例句

1.Before GPS, sailors relied heavily on the marine sextant for navigation.

在GPS普及之前，水手们非常依赖海用六分仪进行导航。

2.The captain used the marine sextant to determine the ship's position at sea.

船长使用海用六分仪来确定船只在海上的位置。

3.He practiced using the marine sextant during his navigation training course.

他在航海培训课程中练习使用海用六分仪。

4.A marine sextant is essential for celestial navigation.

对于天文导航来说，海用六分仪是必不可少的。

5.The old sailor proudly showed his antique marine sextant to the tourists.

那位老水手自豪地向游客展示了他的古董海用六分仪。

作文

The marine sextant is an essential navigational instrument that has been used by sailors and navigators for centuries. It is primarily designed to measure the angle between a celestial object, such as the sun or stars, and the horizon. This measurement is crucial for determining one's position at sea, especially before the advent of modern GPS technology. The marine sextant operates on the principle of triangulation, allowing navigators to calculate their latitude and longitude accurately. Historically, the development of the marine sextant can be traced back to the 18th century when it became a vital tool for maritime exploration and trade. Sailors relied on this instrument to traverse vast oceans, often navigating through treacherous waters. The ability to determine one's position with precision was paramount for avoiding hazards and ensuring safe passage. Using a marine sextant involves several steps. First, the navigator must take a sighting of a celestial body, which requires a clear view of the sky. They then align the instrument's movable arm with the celestial body while simultaneously adjusting the index mirror to ensure an accurate reading. This process demands skill and practice, as even a slight error in measurement can lead to significant navigational mistakes. Despite the rise of digital navigation systems, the marine sextant remains relevant today. Many sailors still prefer to carry one as a backup to electronic devices, which can fail due to various reasons, such as battery depletion or technical malfunctions. Additionally, the marine sextant serves as an educational tool, teaching new generations of sailors about traditional navigation methods and the importance of celestial navigation. In conclusion, the marine sextant is more than just a navigational tool; it represents a rich history of exploration and adventure on the high seas. Its continued use in modern sailing underscores its reliability and the timeless nature of celestial navigation. As technology continues to evolve, the marine sextant stands as a testament to human ingenuity and the enduring quest for discovery. Understanding how to use this instrument not only enhances a sailor's skills but also connects them to the legacy of those who navigated the oceans long before the digital age. In summary, the marine sextant is a remarkable instrument that embodies the spirit of exploration and the art of navigation. Its significance in maritime history cannot be overstated, and its practical applications continue to be valued by sailors around the world. Learning to use a marine sextant is not just about mastering a skill; it is about embracing a tradition that has shaped the course of human history on the seas.

海洋六分仪是一种重要的导航仪器，数百年来一直被水手和导航员使用。它主要用于测量天体（如太阳或星星）与地平线之间的角度。这一测量对于确定在海上的位置至关重要，尤其是在现代GPS技术出现之前。海洋六分仪基于三角测量的原理，使导航员能够准确计算他们的纬度和经度。历史上，海洋六分仪的发展可以追溯到18世纪，当时它成为海洋探索和贸易的重要工具。水手依靠这一仪器穿越辽阔的海洋，常常在危险的水域中航行。精确确定位置的能力对于避免危险和确保安全通行至关重要。使用海洋六分仪涉及几个步骤。首先，导航员必须观察天体，这需要清晰的天空视野。然后，他们将仪器的可动臂与天体对齐，同时调整指示镜以确保读取准确。这个过程需要技巧和练习，因为即使是微小的测量误差也可能导致重大的导航错误。尽管数字导航系统的兴起，海洋六分仪在今天仍然具有相关性。许多水手仍然喜欢携带一个作为电子设备的备份，因为电子设备可能因各种原因而失效，如电池耗尽或技术故障。此外，海洋六分仪作为一种教育工具，教导新一代水手传统导航方法及天文导航的重要性。总之，海洋六分仪不仅仅是一种导航工具；它代表着丰富的探索和冒险历史。在现代航海中，它的持续使用突显了其可靠性以及天文导航的永恒性质。随着技术的不断发展，海洋六分仪作为人类智慧和对发现持久追求的证明而屹立不倒。理解如何使用这一仪器不仅增强了水手的技能，还将他们与那些在数字时代之前航行海洋的人们的遗产连接起来。总而言之，海洋六分仪是一种卓越的仪器，体现了探索精神和导航艺术。它在海洋历史中的重要性不容小觑，其实际应用继续受到世界各地水手的重视。学习使用海洋六分仪不仅仅是掌握一项技能；这是一种拥抱塑造人类历史航海进程的传统。