partial pressure

简明释义

分压

英英释义

例句

1.The partial pressure of carbon dioxide in the blood increases during exercise.

运动时血液中的二氧化碳分压增加。

2.In scuba diving, understanding the partial pressure of nitrogen is crucial to avoid decompression sickness.

在潜水中，理解氮气的分压对避免减压病至关重要。

3.Gas mixtures are analyzed by measuring the partial pressure of each component gas.

通过测量每种成分气体的分压来分析气体混合物。

4.The partial pressure of water vapor affects weather conditions significantly.

水蒸气的分压对天气条件有显著影响。

5.The partial pressure of oxygen in the atmosphere is about 21% of the total atmospheric pressure.

大气中氧气的分压约占总大气压力的21%。

作文

The concept of partial pressure is fundamental in the study of gases and their behaviors. In simple terms, partial pressure refers to the pressure that a single gas in a mixture would exert if it occupied the entire volume by itself at the same temperature. Understanding this concept is essential for various scientific fields, including chemistry, physics, and environmental science.To illustrate the importance of partial pressure, consider the atmosphere we breathe. The air is a mixture of different gases, primarily nitrogen, oxygen, carbon dioxide, and trace amounts of others. Each of these gases contributes to the total atmospheric pressure, but they do so independently. For instance, at sea level, the total atmospheric pressure is about 101.3 kPa. The partial pressure of oxygen in the atmosphere is approximately 21% of this total pressure, which translates to around 21.2 kPa. This means that if there were only oxygen in the environment, it would exert a pressure of 21.2 kPa.The significance of partial pressure extends beyond just understanding the composition of air. It plays a crucial role in processes such as respiration. When we inhale, oxygen from the air enters our lungs and diffuses into our bloodstream. The driving force behind this diffusion is the difference in partial pressure between the alveoli in the lungs and the blood. The higher partial pressure of oxygen in the alveoli compared to that in the blood allows oxygen to flow into the bloodstream, where it is transported to cells throughout the body.Moreover, partial pressure is vital in various industrial applications, such as chemical manufacturing and environmental monitoring. For example, in the Haber process for synthesizing ammonia, the partial pressure of nitrogen and hydrogen gases must be carefully controlled to optimize production efficiency. Similarly, in environmental science, understanding the partial pressure of greenhouse gases in the atmosphere helps scientists assess climate change and its impacts.In conclusion, the concept of partial pressure is not only a theoretical principle but also a practical tool used in numerous scientific and industrial applications. By comprehending how partial pressure works, we can gain insights into the behavior of gases, the dynamics of respiratory processes, and the implications of various gases in our environment. As we continue to explore the complexities of our atmosphere and the gases within it, the understanding of partial pressure will remain a cornerstone of scientific inquiry and innovation.

部分压力的概念在气体及其行为的研究中是基础性的。简单来说，部分压力指的是在混合气体中，单一气体如果在相同温度下占据整个体积时所施加的压力。理解这一概念对于化学、物理和环境科学等多个科学领域至关重要。为了说明部分压力的重要性，考虑我们呼吸的空气。空气是由多种气体的混合物，主要是氮气、氧气、二氧化碳以及微量其他气体组成。这些气体各自独立地对总大气压力做出贡献。例如，在海平面，总大气压力约为101.3 kPa。空气中氧气的部分压力大约占这一总压力的21%，这转化为大约21.2 kPa。这意味着，如果环境中只有氧气，它将施加21.2 kPa的压力。部分压力的意义不仅限于理解空气的成分。它在呼吸等过程中的作用也至关重要。当我们吸气时，空气中的氧气进入我们的肺部并扩散到血液中。这种扩散的驱动力是肺泡与血液之间的部分压力差异。肺泡中氧气的部分压力高于血液中的部分压力，从而使氧气流入血液，被运输到全身的细胞。此外，部分压力在化学制造和环境监测等各种工业应用中也至关重要。例如，在合成氨的哈伯法中，氮气和氢气的部分压力必须被精确控制以优化生产效率。同样，在环境科学中，理解大气中温室气体的部分压力有助于科学家评估气候变化及其影响。总之，部分压力的概念不仅是一个理论原则，也是许多科学和工业应用中的实用工具。通过理解部分压力的工作原理，我们可以深入了解气体的行为、呼吸过程的动态以及环境中各种气体的影响。随着我们继续探索大气及其中气体的复杂性，部分压力的理解将始终是科学探究和创新的基石。