assumed longitude

简明释义

选定经度

英英释义

例句

1.To avoid errors, we should always check the assumed longitude before starting the expedition.

为了避免错误，我们在开始探险之前应该始终检查假定经度。

2.The navigation system calculated the ship's position based on the assumed longitude of 75 degrees west.

导航系统根据假定经度75度西计算了船的位置。

3.The pilot adjusted the flight path after verifying the assumed longitude with satellite data.

飞行员在用卫星数据验证假定经度后调整了航线。

4.In our mapping project, we used an assumed longitude to create initial reference points.

在我们的制图项目中，我们使用了一个假定经度来创建初始参考点。

5.The surveyor noted that the assumed longitude was critical for accurate land measurements.

测量员指出，假定经度对于准确的土地测量至关重要。

作文

In the world of navigation and cartography, understanding geographical coordinates is essential. Among these coordinates, longitude plays a crucial role in determining a location's position on the Earth's surface. However, there are instances when we rely on an assumed longitude, which refers to a longitude value that is not precisely measured but rather estimated based on available data or assumptions. This concept becomes particularly important in various fields such as astronomy, maritime navigation, and even in historical explorations.The use of assumed longitude can be traced back to early navigators who lacked the precise instruments we have today. For instance, sailors in the 18th century often relied on dead reckoning to estimate their position at sea. They would calculate their assumed longitude based on their last known position, speed, and direction of travel. While this method was useful, it was also fraught with errors, as it depended heavily on the sailor's ability to accurately estimate these factors.In modern times, the significance of assumed longitude persists, especially in the context of satellite navigation systems. Although Global Positioning System (GPS) technology provides highly accurate coordinates, there are still scenarios where an assumed longitude might be used. For example, during the initial stages of a satellite's orbit determination, scientists may use an assumed longitude to estimate the satellite's position before refining it with actual measurements. This approach allows for quicker calculations and helps in establishing a preliminary framework for further analysis.Moreover, the concept of assumed longitude extends beyond technical applications. In literature and storytelling, characters might find themselves in situations where they must navigate using assumed longitude. This could symbolize the uncertainty and unpredictability of their journey. For instance, a character embarking on an adventure might set sail towards a distant land, relying on maps that contain assumed longitude values. The journey becomes a metaphor for life itself, where individuals often make decisions based on incomplete information, hoping to find their way despite the challenges ahead.In conclusion, the term assumed longitude encapsulates both a technical and philosophical dimension of navigation and exploration. Whether in the context of maritime history, modern satellite technology, or even in literary narratives, assumed longitude serves as a reminder of the importance of estimation and assumption in our quest for knowledge and understanding. As we continue to explore the world around us, recognizing the role of assumed longitude can enhance our appreciation for the complexities involved in navigation and the human experience.

在导航和制图的世界中，理解地理坐标至关重要。在这些坐标中，经度在确定位置在地球表面的位置方面起着关键作用。然而，有时我们依赖于assumed longitude，这指的是一个没有精确测量而是基于可用数据或假设估计的经度值。这个概念在天文学、海洋导航，甚至历史探险等多个领域中变得尤为重要。assumed longitude的使用可以追溯到早期缺乏我们今天所拥有精确仪器的导航员。例如，18世纪的水手常常依靠推算来估计他们在海上的位置。他们会根据最后已知的位置、速度和航向来计算assumed longitude。虽然这种方法很有用，但也充满了误差，因为它在很大程度上依赖于水手准确估计这些因素的能力。在现代，assumed longitude的重要性依然存在，尤其是在卫星导航系统的背景下。尽管全球定位系统（GPS）技术提供了高度准确的坐标，但仍然有一些场景可能会使用assumed longitude。例如，在卫星轨道确定的初始阶段，科学家可能会使用assumed longitude来估算卫星的位置，然后通过实际测量进行修正。这种方法允许更快的计算，并帮助建立进一步分析的初步框架。此外，assumed longitude的概念超越了技术应用。在文学和叙事中，角色可能会发现自己必须使用assumed longitude进行导航的情境。这可能象征着他们旅程的不确定性和不可预测性。例如，一个角色踏上冒险之旅，依靠包含assumed longitude值的地图驶向遥远的土地。这段旅程成为生活本身的隐喻，个人往往根据不完整的信息做出决策，希望在面临挑战时找到自己的道路。总之，术语assumed longitude囊括了导航和探索的技术和哲学维度。无论是在海洋历史、现代卫星技术还是文学叙事的背景下，assumed longitude都提醒我们在追求知识和理解的过程中估计和假设的重要性。随着我们继续探索周围的世界，认识到assumed longitude的作用可以增强我们对导航复杂性的欣赏以及人类经验的理解。