surveying sextant

简明释义

水道测量六分仪

英英释义

例句

1.In the absence of modern GPS, the crew relied on a surveying sextant for navigation during their voyage.

在没有现代GPS的情况下，船员们依靠测量六分仪进行航行。

2.During the historical reenactment, the sailors used a surveying sextant to navigate the seas like their ancestors.

在历史重演活动中，水手们使用测量六分仪像他们的祖先一样在海上航行。

3.A surveying sextant can help determine your latitude by measuring the height of the sun at noon.

通过测量正午太阳的高度，测量六分仪可以帮助确定你的纬度。

4.The captain demonstrated how to use a surveying sextant to the new recruits on board.

船长向新招募的船员展示了如何使用测量六分仪。

5.The marine surveyor used a surveying sextant to accurately measure the angle between two distant points.

海洋测量师使用了一个测量六分仪来准确测量两个远处点之间的角度。

作文

The world of navigation and surveying has always been fascinating, especially when we consider the tools that have been developed over the centuries to assist in these endeavors. One such tool is the surveying sextant, which plays a crucial role in determining the position of a point on the Earth's surface. The surveying sextant is an instrument used to measure angles between two visible objects, typically celestial bodies like the sun, moon, or stars, and the horizon. This measurement is essential for navigators and surveyors alike, as it helps them establish their geographical location with remarkable accuracy.Historically, the sextant was a significant advancement over earlier navigational tools. Prior to its invention, mariners relied on less accurate instruments, which often led to errors in navigation. The surveying sextant improved upon these methods by allowing for precise angular measurements. It consists of a curved arc, a movable arm called an index arm, and a telescope that helps the user sight the celestial body and the horizon simultaneously. By aligning these two points, the navigator can read the angle off the scale, which can then be used in conjunction with timekeeping to calculate their exact position.In modern times, while technology has introduced GPS and other advanced navigational systems, the surveying sextant remains relevant, particularly in fields requiring high precision and reliability. For instance, in surveying land for construction projects or mapping out new territories, the sextant can provide data that is not only accurate but also independent of electronic systems that may fail or malfunction. The ability to perform surveys using a surveying sextant is a testament to the enduring value of traditional methods in an increasingly digital world.Moreover, learning to use a surveying sextant is an invaluable skill for students and professionals in the fields of geography, astronomy, and marine navigation. It encourages a deeper understanding of the Earth’s geometry and the principles of triangulation. Mastering this tool requires practice and a solid grasp of trigonometric concepts, making it a challenging yet rewarding endeavor.In conclusion, the surveying sextant is more than just a historical artifact; it is a vital instrument that continues to serve a purpose in contemporary surveying and navigation. Its ability to provide accurate measurements without reliance on electronics highlights the importance of traditional techniques in our modern age. As we continue to advance technologically, it is essential to preserve the knowledge and skills associated with tools like the surveying sextant, ensuring that future generations appreciate both the history and the science behind navigation and surveying.

导航和测量的世界一直令人着迷，尤其是当我们考虑到几个世纪以来为帮助这些工作而开发的工具时。其中一个工具就是测量六分仪，它在确定地球表面某一点的位置方面发挥着至关重要的作用。测量六分仪是一种用于测量两个可见物体之间角度的仪器，通常是太阳、月亮或星星等天体与地平线之间的角度。这种测量对于导航员和测量员来说都是必不可少的，因为它帮助他们以显著的准确性确定自己的地理位置。从历史上看，六分仪是对早期导航工具的重大改进。在它发明之前，海员依赖于不太准确的仪器，这常常导致导航中的错误。测量六分仪通过允许精确的角度测量改善了这些方法。它由一个弯曲的弧形部分、一个称为指针臂的可移动臂和一个望远镜组成，帮助用户同时瞄准天体和地平线。通过对齐这两个点，导航员可以在刻度上读取角度，然后结合时间记录计算出他们的确切位置。在现代，虽然技术引入了GPS和其他先进的导航系统，但测量六分仪仍然相关，特别是在需要高精度和可靠性的领域。例如，在为建筑项目测量土地或绘制新领土时，六分仪可以提供不仅准确而且独立于可能失败或故障的电子系统的数据。使用测量六分仪进行测量的能力证明了在日益数字化的世界中传统方法的持久价值。此外，学习使用测量六分仪是地理、天文学和海洋导航领域的学生和专业人士的一项宝贵技能。它鼓励对地球几何和三角测量原理的更深入理解。掌握这一工具需要实践和扎实的三角函数概念，使其成为一项具有挑战性但值得追求的事业。总之，测量六分仪不仅仅是一个历史文物；它是一个重要的仪器，继续在当代测量和导航中发挥作用。它能够提供准确的测量而无需依赖电子设备，突显了传统技术在现代时代的重要性。随着我们技术的不断进步，保存与测量六分仪相关的知识和技能至关重要，以确保未来几代人都能欣赏导航和测量背后的历史和科学。