inch of mercury

简明释义

英寸汞柱

英英释义

例句

1.When hiking at high altitudes, the pressure can drop to 25 inch of mercury or lower.

在高海拔地区徒步旅行时，气压可能降至25英寸汞柱或更低。

2.In meteorology, a drop in pressure by 1 inch of mercury can indicate an approaching storm.

在气象学中，气压下降1英寸汞柱可能表示暴风雨即将来临。

3.The barometer read 29.5 inch of mercury before the weather changed.

气压计在天气变化前读数为29.5英寸汞柱。

4.The atmospheric pressure today is measured at 30 inch of mercury.

今天的气压测量为30英寸汞柱。

5.A normal sea-level pressure is about 29.92 inch of mercury.

正常的海平面气压大约是29.92英寸汞柱。

作文

In the world of meteorology, understanding atmospheric pressure is crucial for predicting weather patterns and phenomena. One common unit of measurement for atmospheric pressure is the inch of mercury, which is often abbreviated as inHg. This unit derives its name from the use of mercury in barometers, an instrument that measures air pressure. When we think about atmospheric pressure, it is important to realize that it plays a significant role in our daily lives, affecting everything from the weather we experience to how airplanes operate. The inch of mercury measures how high a column of mercury will rise in a glass tube when subjected to atmospheric pressure. At sea level, standard atmospheric pressure is defined as 29.92 inches of mercury, which is equivalent to 1013.25 hPa (hectopascals) or 760 mmHg (millimeters of mercury). This means that at sea level, the weight of the air above us exerts enough force to raise a column of mercury to this height. Meteorologists use the inch of mercury as a reference point when reporting weather conditions. For instance, when a weather report states that the atmospheric pressure is 30 inches of mercury, it indicates that the weather is generally stable, which can lead to clear skies and pleasant conditions. Conversely, if the pressure drops to 28 inches of mercury, it may suggest that a storm is approaching, as lower pressure is often associated with unsettled weather. The significance of the inch of mercury extends beyond just weather forecasting. It is also used in various scientific and engineering applications, such as in the design of vacuum systems and in the calibration of pressure sensors. In these contexts, understanding how pressure measurements relate to the inch of mercury can be essential for ensuring accuracy and safety. In everyday life, most people may not realize the importance of the inch of mercury unless they are involved in activities like flying, sailing, or even hiking in mountainous areas. Pilots, for example, must be acutely aware of changes in atmospheric pressure, as these changes can affect altitude readings and aircraft performance. A drop in pressure can indicate that an aircraft is climbing higher than intended, while a rise in pressure could signal a descent. Additionally, the inch of mercury has historical significance as well. The use of mercury in barometers dates back to the 17th century, when scientists like Evangelista Torricelli first demonstrated how mercury could be used to measure atmospheric pressure. This discovery laid the groundwork for modern meteorology and our understanding of weather systems. In conclusion, the inch of mercury is more than just a unit of measurement; it is a vital component in the study of atmospheric pressure and weather forecasting. By comprehending how this measurement works and its implications in various fields, we can gain a deeper appreciation for the science behind the weather and its impact on our lives. Whether we are checking the weather report before heading out or flying in an airplane, the inch of mercury plays a crucial role in shaping our experiences and understanding of the world around us.

在气象学的世界中，理解大气压力对于预测天气模式和现象至关重要。一个常见的大气压力测量单位是水银英寸，通常缩写为inHg。这个单位得名于水银在气压计中的使用，气压计是一种测量空气压力的仪器。当我们考虑大气压力时，重要的是要意识到它在我们的日常生活中发挥着重要作用，影响着从我们经历的天气到飞机的运行等方方面面。水银英寸测量在玻璃管中水银柱在大气压力作用下将升高到多高。在海平面上，标准大气压力被定义为29.92 水银英寸，等于1013.25 hPa（百帕斯卡）或760 mmHg（毫米水银柱）。这意味着在海平面上，空气的重量施加的力足以使水银柱升高到这个高度。气象学家在报告天气条件时使用水银英寸作为参考点。例如，当天气报告指出大气压力为30 水银英寸时，这表明天气通常是稳定的，可能导致晴朗的天空和宜人的条件。相反，如果压力降到28 水银英寸，这可能表明暴风雨即将来临，因为较低的压力通常与不稳定的天气有关。水银英寸的重要性不仅仅局限于天气预报。它还用于各种科学和工程应用，如真空系统的设计以及压力传感器的校准。在这些背景下，理解压力测量与水银英寸之间的关系对于确保准确性和安全性至关重要。在日常生活中，大多数人可能没有意识到水银英寸的重要性，除非他们参与飞行、航海或甚至在山区远足等活动。例如，飞行员必须非常清楚大气压力的变化，因为这些变化会影响高度读数和飞机性能。压力的下降可能表明飞机的爬升高度超过预期，而压力的上升可能表示下降。此外，水银英寸也具有历史意义。水银在气压计中的使用可以追溯到17世纪，当时科学家如埃万杰利斯塔·托里切利首次演示了如何使用水银测量大气压力。这一发现为现代气象学和我们对天气系统的理解奠定了基础。总之，水银英寸不仅仅是一个测量单位；它是研究大气压力和天气预报的重要组成部分。通过理解这一测量的工作原理及其在各个领域的影响，我们可以更深入地欣赏天气背后的科学及其对我们生活的影响。无论我们是在出门前查看天气预报，还是在飞机上飞行，水银英寸在塑造我们的经历和理解我们周围的世界中都发挥着至关重要的作用。