negative pressure

简明释义

负压

英英释义

例句

1.The construction site employed negative pressure 负压 techniques to manage dust and debris.

施工现场采用了负压技术来管理灰尘和碎片。

2.Using negative pressure 负压 helps to control the spread of airborne contaminants.

使用负压有助于控制空气传播污染物的扩散。

3.The laboratory maintained a negative pressure 负压 environment to prevent contamination from escaping.

实验室维持了一个负压环境，以防止污染物逸出。

4.In hospitals, negative pressure 负压 rooms are used to isolate patients with infectious diseases.

在医院中，负压病房用于隔离传染病患者。

5.The HVAC system was designed to create negative pressure 负压 in the clean room.

该暖通空调系统旨在在洁净室内创造负压。

作文

In the field of science and engineering, the concept of negative pressure (负压) plays a crucial role in various applications. Understanding this phenomenon is essential for professionals working in areas such as fluid dynamics, HVAC systems, and even medical devices. Negative pressure refers to a condition where the pressure in a given space is lower than the surrounding atmospheric pressure. This can lead to several interesting effects and practical uses.One of the most common examples of negative pressure can be found in vacuum systems. These systems operate by removing air from a sealed environment, creating a state where the internal pressure is significantly lower than that of the outside atmosphere. This principle is utilized in many industrial processes, including packaging, where products are sealed in vacuum conditions to extend their shelf life. By eliminating air, the growth of bacteria and mold is inhibited, ensuring that food remains fresh for longer periods.Moreover, negative pressure is also critical in the medical field. In hospitals, negative pressure rooms are designed to prevent the spread of airborne pathogens. These rooms maintain a pressure lower than that of adjacent areas, ensuring that any potentially contaminated air does not escape into the rest of the facility. This is particularly important in controlling infections, especially when dealing with highly contagious diseases. The design of these rooms involves sophisticated ventilation systems that continuously draw air out, effectively maintaining the negative pressure environment.In addition to its applications in vacuum technology and healthcare, negative pressure can also be observed in natural phenomena. For instance, when water is drawn up from a straw, the pressure inside the straw becomes lower than the atmospheric pressure outside it. This negative pressure allows the liquid to rise against gravity, demonstrating how pressure differences can create movement in fluids. Such principles are not only fascinating but also form the basis of various engineering solutions, including the design of pumps and irrigation systems.Furthermore, the concept of negative pressure is also relevant in environmental science. For example, in soil mechanics, negative pressure (or suction) can affect water retention in soils. When the moisture content in the soil decreases, the water held within the soil particles can create negative pressure, influencing plant growth and agricultural practices. Understanding this aspect of negative pressure helps farmers optimize irrigation and improve crop yields.In conclusion, negative pressure (负压) is a multifaceted concept that spans various disciplines, from engineering to medicine and environmental science. Its applications are vast and varied, highlighting the importance of understanding pressure dynamics in both theoretical and practical contexts. As technology continues to advance, the significance of negative pressure will likely grow, leading to new innovations and improvements in numerous fields. Therefore, a thorough grasp of this concept is essential for anyone involved in scientific research or applied technologies.

在科学和工程领域，负压的概念在各种应用中发挥着至关重要的作用。理解这一现象对于在流体动力学、暖通空调系统以及医疗设备等领域工作的专业人士至关重要。负压是指给定空间内的压力低于周围大气压力的状态。这可能导致一些有趣的效果和实际用途。最常见的负压示例可以在真空系统中找到。这些系统通过从密封环境中去除空气来工作，从而创建一种内部压力显著低于外部大气压力的状态。这一原理在许多工业过程中得到应用，包括包装，其中产品在真空条件下密封，以延长其保质期。通过消除空气，细菌和霉菌的生长受到抑制，确保食品在更长时间内保持新鲜。此外，负压在医疗领域也至关重要。在医院中，负压房间旨在防止空气传播病原体的扩散。这些房间维持的压力低于相邻区域，确保任何潜在受污染的空气不会逃逸到设施的其他部分。这在控制感染方面尤为重要，尤其是在处理高度传染性疾病时。这些房间的设计涉及复杂的通风系统，不断抽出空气，有效地维持负压环境。除了在真空技术和医疗中的应用外，负压还可以在自然现象中观察到。例如，当从吸管中抽水时，吸管内的压力低于外部大气压力。这种负压使液体能够逆重力上升，展示了压力差如何在流体中产生运动。这些原理不仅引人入胜，而且构成了各种工程解决方案的基础，包括泵和灌溉系统的设计。此外，负压的概念在环境科学中也很相关。例如，在土壤力学中，负压（或吸力）会影响土壤中的水分保持。当土壤中的水分含量降低时，土壤颗粒中保持的水分可能会产生负压，影响植物生长和农业实践。理解这一方面的负压帮助农民优化灌溉，提高作物产量。总之，负压是一个多方面的概念，跨越多个学科，从工程到医学和环境科学。它的应用广泛而多样，突显了在理论和实践背景下理解压力动态的重要性。随着技术的不断进步，负压的重要性可能会增加，从而在众多领域带来新的创新和改进。因此，深入掌握这一概念对任何参与科学研究或应用技术的人来说都是必不可少的。