true longitude

简明释义

真经度

英英释义

例句

1.Understanding true longitude is crucial for precise mapping of geographic locations.

理解真经度对于精确绘制地理位置至关重要。

2.The software can automatically adjust the true longitude based on satellite data.

该软件可以根据卫星数据自动调整真经度。

3.To find the true longitude, sailors often used celestial navigation techniques.

为了找到真经度，水手们常常使用天文导航技术。

4.The navigator calculated the true longitude to ensure accurate positioning at sea.

导航员计算了真经度以确保在海上的准确定位。

5.In aviation, knowing the true longitude helps pilots maintain their flight path.

在航空中，知道真经度有助于飞行员保持航线。

作文

In the realm of navigation and geography, understanding the concept of true longitude is crucial for accurate positioning on the Earth. The term refers to the actual angular distance of a point east or west of the Prime Meridian, measured along the equator. This measurement is vital for sailors, pilots, and anyone who relies on precise location data. Unlike true longitude, which takes into account the Earth's shape and rotation, there are other forms of longitude that can lead to discrepancies in navigation. For instance, 'apparent longitude' may vary due to local topographical features or atmospheric conditions, making it less reliable for long-distance travel.The significance of true longitude becomes apparent when we consider the history of navigation. In the past, mariners faced significant challenges in determining their position at sea. They relied on celestial navigation, using the stars and the sun to estimate their location. However, without an accurate way to measure true longitude, they often found themselves lost or off course. The invention of the marine chronometer in the 18th century was a breakthrough, allowing sailors to calculate true longitude by comparing local time with Greenwich Mean Time. This advancement revolutionized maritime navigation, enabling ships to traverse the oceans with greater confidence.Today, modern technology has made the calculation of true longitude more accessible than ever. Global Positioning System (GPS) devices utilize satellites to provide real-time location data, including true longitude. This technology has transformed various fields, from aviation to land surveying, ensuring that professionals can pinpoint their exact location with remarkable accuracy. Furthermore, GPS systems have become essential tools for everyday users, allowing individuals to navigate unfamiliar territories with ease.However, while GPS provides convenience, it is still important to understand the foundational concepts of navigation, including true longitude. Relying solely on technology can lead to complacency, and in situations where GPS signals are weak or unavailable, knowledge of traditional navigation techniques becomes invaluable. For example, if a pilot loses GPS signal during flight, they must rely on their training and understanding of true longitude and other navigational principles to ensure a safe landing.Moreover, the importance of true longitude extends beyond navigation. It plays a role in various scientific disciplines, including geology and meteorology. Understanding the Earth's coordinate system allows scientists to study phenomena such as tectonic plate movements and weather patterns. By accurately measuring true longitude, researchers can gather data that contributes to our understanding of the planet's dynamics.In conclusion, the concept of true longitude is integral to navigation, science, and technology. Its historical significance in maritime exploration highlights the challenges faced by early navigators and the advancements made over time. As we continue to rely on modern technology for navigation, it is essential to remember the fundamental principles that underpin these systems. By understanding true longitude and its implications, we can navigate the world more effectively and appreciate the intricacies of our planet's geography.

在导航和地理领域，理解true longitude的概念对于在地球上准确定位至关重要。该术语指的是一个点相对于本初子午线的实际角度距离，沿着赤道向东或向西测量。这一测量对于水手、飞行员以及任何依赖精确位置信息的人来说都是至关重要的。与考虑到地球形状和旋转的true longitude不同，其他形式的经度可能会导致导航中的差异。例如，由于局部地形特征或大气条件的影响，“表观经度”可能会有所不同，使其在长途旅行中不那么可靠。当我们考虑航海历史时，true longitude的重要性变得显而易见。过去，海员在确定海上位置时面临重大挑战。他们依靠天文导航，利用星星和太阳来估算自己的位置。然而，如果没有准确的方法来测量true longitude，他们往往会迷失方向或偏离航线。18世纪海洋计时器的发明是一个突破，使水手能够通过比较当地时间与格林威治标准时间来计算true longitude。这一进展彻底改变了海洋导航，使船只能够更加自信地穿越海洋。如今，现代技术使得计算true longitude变得比以往任何时候都更加容易。全球定位系统（GPS）设备利用卫星提供实时位置信息，包括true longitude。这项技术已经改变了各个领域，从航空到土地测量，确保专业人员能够以惊人的准确性确定他们的确切位置。此外，GPS系统已成为日常用户的基本工具，使个人能够轻松地在陌生地区导航。然而，尽管GPS提供了便利，但理解导航的基础概念，包括true longitude，仍然很重要。仅仅依赖技术可能会导致自满，而在GPS信号微弱或不可用的情况下，了解传统导航技术变得尤为重要。例如，如果飞行员在飞行过程中失去GPS信号，他们必须依靠自己的训练和对true longitude及其他导航原理的理解，以确保安全着陆。此外，true longitude的重要性不仅限于导航。它在地质学和气象学等多个科学学科中也发挥着作用。理解地球的坐标系统使科学家能够研究构造板块运动和天气模式等现象。通过准确测量true longitude，研究人员可以收集数据，为我们理解地球的动态做出贡献。总之，true longitude的概念是导航、科学和技术的核心。它在海洋探索中的历史重要性突显了早期航海者所面临的挑战以及随着时间的推移所取得的进展。随着我们继续依赖现代技术进行导航，记住支撑这些系统的基本原则至关重要。通过理解true longitude及其含义，我们可以更有效地在世界中导航，并欣赏我们星球地理的复杂性。