mercury vacuum gauge

简明释义

水银真空表

英英释义

例句

1.During the experiment, the mercury vacuum gauge indicated a pressure drop.

在实验过程中，水银真空计显示出压力下降。

2.The mercury vacuum gauge is often preferred for its reliability in high-vacuum applications.

水银真空计因其在高真空应用中的可靠性而受到青睐。

3.For accurate readings, it's essential to calibrate the mercury vacuum gauge regularly.

为了获得准确的读数，定期校准水银真空计是必不可少的。

4.He replaced the old mercury vacuum gauge with a digital one for better accuracy.

他用数字式水银真空计替换了旧的，以获得更好的准确性。

5.The technician used a mercury vacuum gauge to measure the pressure in the vacuum chamber.

技术人员使用水银真空计测量真空室内的压力。

作文

In the world of scientific instruments, precision is paramount. One of the most reliable tools used to measure low pressure in a vacuum system is the mercury vacuum gauge. This device utilizes the physical properties of mercury to provide accurate readings of pressure levels. The mercury vacuum gauge consists of a glass tube filled with mercury, which is affected by atmospheric pressure and the vacuum created within a system. When the vacuum is applied, the mercury level in the tube changes, allowing for a direct measurement of the pressure in the system. The operation of the mercury vacuum gauge is based on the principle that the height of the mercury column is inversely proportional to the pressure exerted on it. As the vacuum increases, the atmospheric pressure decreases, causing the mercury to rise in the tube. This height can then be read against a calibrated scale, providing a precise measurement of the vacuum level. One of the advantages of using a mercury vacuum gauge is its ability to measure very low pressures, which are often difficult to detect with other types of gauges. This makes it an essential tool in various fields, including physics, engineering, and even in some medical applications. For instance, in laboratories where experiments require a controlled vacuum environment, the mercury vacuum gauge ensures that the conditions remain stable and accurate. However, despite its accuracy, the use of a mercury vacuum gauge comes with certain drawbacks. Mercury is a toxic substance, and handling it requires caution. Any spills or exposure can pose health risks, making it necessary for users to follow strict safety protocols. Additionally, the gauge must be properly calibrated and maintained to ensure its reliability over time. In recent years, alternative vacuum gauges have been developed, such as digital and mechanical gauges that do not use mercury. These alternatives offer several benefits, including ease of use, portability, and reduced health risks. Nonetheless, the mercury vacuum gauge remains a classic choice for many professionals due to its proven accuracy and reliability. In conclusion, the mercury vacuum gauge is a vital instrument in the measurement of vacuum pressure. Its unique design and functionality allow for precise readings, making it indispensable in various scientific and industrial applications. While it has its limitations, particularly concerning safety and environmental impact, the mercury vacuum gauge continues to be a trusted tool among researchers and engineers. As technology progresses, it will be interesting to see how the role of the mercury vacuum gauge evolves alongside new innovations in measurement technology.

在科学仪器的世界中，精确性至关重要。用于测量真空系统低压的最可靠工具之一是汞真空计。该设备利用汞的物理特性提供压力水平的准确读数。汞真空计由一个充满汞的玻璃管组成，该管受大气压力和系统内产生的真空影响。当施加真空时，管内的汞位移发生变化，从而允许直接测量系统中的压力。汞真空计的操作基于以下原理：汞柱的高度与施加在其上的压力成反比。随着真空的增加，大气压力降低，导致汞在管中上升。这个高度可以与校准的刻度进行比较，从而提供真空水平的精确测量。使用汞真空计的一个优点是它能够测量非常低的压力，这通常是其他类型的计量仪器难以检测到的。这使得它在物理学、工程学甚至某些医疗应用中成为必不可少的工具。例如，在需要控制真空环境的实验室中，汞真空计确保条件保持稳定和准确。然而，尽管它具有准确性，使用汞真空计也有一定的缺点。汞是一种有毒物质，处理时需要谨慎。任何泄漏或接触都可能带来健康风险，因此用户必须遵循严格的安全协议。此外，必须对仪表进行适当的校准和维护，以确保其长期可靠性。近年来，已经开发出不使用汞的替代真空计，例如数字和机械计。这些替代品提供了多种优势，包括易用性、便携性和减少健康风险。然而，由于其经过验证的准确性和可靠性，汞真空计仍然是许多专业人士的经典选择。总之，汞真空计是真空压力测量中的重要仪器。其独特的设计和功能允许精确读数，使其在各种科学和工业应用中不可或缺。尽管它存在一些局限性，特别是在安全和环境影响方面，但汞真空计仍然是研究人员和工程师信赖的工具。随着技术的发展，观察汞真空计如何与新的测量技术创新一起演变，将是非常有趣的。