dhydrographic sextant

简明释义

水道测量六分仪

英英释义

例句

1.During the research expedition, the scientists relied on the dhydrographic sextant to chart their course.

在研究考察中，科学家们依靠水文学六分仪来绘制他们的航线。

2.Sailors have been using the dhydrographic sextant for centuries to navigate the open waters.

水手们几个世纪以来一直使用水文学六分仪在开阔水域中导航。

3.For marine navigation, a dhydrographic sextant is essential for measuring angles between celestial bodies.

在海洋导航中，水文学六分仪对于测量天体之间的角度至关重要。

4.The captain used the dhydrographic sextant to accurately determine the ship's position at sea.

船长使用水文学六分仪准确确定船只在海上的位置。

5.The accuracy of the dhydrographic sextant can greatly affect the results of oceanographic surveys.

水文学六分仪的准确性会极大影响海洋调查的结果。

作文

The field of navigation has evolved tremendously over the centuries, and one of the pivotal tools in this evolution is the dhydrographic sextant. This instrument has played a crucial role in maritime navigation, allowing sailors to determine their position at sea with remarkable accuracy. The dhydrographic sextant, specifically designed for hydrographic surveys, is an advanced version of the traditional sextant. It is used to measure the angles between celestial objects and the horizon, which is essential for charting courses and ensuring safe passage across oceans.In essence, the dhydrographic sextant combines the principles of astronomy and geometry to provide navigators with vital information about their location. By measuring the angle of a celestial body above the horizon, sailors can calculate their latitude. When combined with a precise timekeeping device, they can also determine their longitude. This capability is particularly important in vast and featureless oceanic expanses where landmarks are few and far between.The design of the dhydrographic sextant is a marvel of engineering. It typically consists of a graduated arc, a telescope, and a movable arm called an index arm. The user aligns the celestial object with the horizon using the telescope and the index arm, reading the angle from the graduated arc. Modern versions may include digital displays and electronic components that enhance accuracy and ease of use. As technology advances, the integration of GPS and other electronic navigation systems has transformed how we navigate, yet the fundamental principles behind the dhydrographic sextant remain relevant.One of the key advantages of using a dhydrographic sextant is its independence from electronic systems. In situations where electronic navigation instruments fail or are unavailable, the sextant remains a reliable backup. This resilience is particularly valuable in remote areas or during emergencies. Additionally, the dhydrographic sextant allows for a deeper understanding of celestial navigation, fostering a connection between the navigator and the natural world.Learning to use a dhydrographic sextant requires skill and practice. Navigators must familiarize themselves with the instrument's mechanics and the mathematical calculations involved. Traditional training often involves studying the movements of celestial bodies, understanding time zones, and mastering the art of triangulation. This process not only enhances navigational skills but also cultivates patience and precision.In conclusion, the dhydrographic sextant is more than just a tool; it is a symbol of human ingenuity and exploration. Its role in maritime history cannot be overstated, as it has enabled countless voyages across the globe. As we continue to innovate and develop new technologies, the dhydrographic sextant serves as a reminder of our roots in navigation and the enduring importance of understanding the natural world around us. Whether used by seasoned sailors or students of navigation, the dhydrographic sextant remains an invaluable asset in the quest for knowledge and adventure on the high seas.

导航领域在几个世纪中经历了巨大的演变，而这一演变中一个关键工具就是水文六分仪。该仪器在海洋导航中发挥了至关重要的作用，使得水手能够以相当高的精度确定他们在海上的位置。水文六分仪是传统六分仪的高级版本，专门用于水文调查。它用于测量天体与地平线之间的角度，这对于绘制航线和确保安全通过海洋至关重要。从本质上讲，水文六分仪结合了天文学和几何学的原理，为导航员提供关于其位置的重要信息。通过测量天体在地平线上方的角度，水手可以计算出他们的纬度。当与精确的计时设备结合时，他们还可以确定他们的经度。这一能力在辽阔且无特征的海洋中尤为重要，因为那里的地标寥寥无几。水文六分仪的设计是工程学的奇迹。它通常由一个刻度弧、一个望远镜和一个可移动的臂（称为指示臂）组成。用户使用望远镜和指示臂对齐天体与地平线，从刻度弧上读取角度。现代版本可能包括数字显示和电子组件，以提高准确性和使用便利性。随着技术的发展，GPS和其他电子导航系统的集成改变了我们的导航方式，但水文六分仪背后的基本原理仍然相关。使用水文六分仪的一个主要优点是它独立于电子系统。在电子导航仪器失效或不可用的情况下，该六分仪仍然是一种可靠的备份。这种韧性在偏远地区或紧急情况下尤其有价值。此外，水文六分仪使人们对天文导航有更深刻的理解，促进了导航员与自然世界之间的联系。学习使用水文六分仪需要技能和练习。导航员必须熟悉仪器的机械原理和涉及的数学计算。传统培训通常包括研究天体的运动、理解时区以及掌握三角测量的艺术。这个过程不仅增强了导航技能，还培养了耐心和精确性。总之，水文六分仪不仅仅是一种工具；它是人类聪明才智和探索精神的象征。它在海洋历史中的作用不容小觑，因为它使无数次全球航行成为可能。随着我们继续创新和开发新技术，水文六分仪提醒我们在导航中的根基以及理解我们周围自然世界的持久重要性。无论是经验丰富的水手还是导航学生，水文六分仪始终是追求知识和冒险的宝贵资产。