partial vacuum

简明释义

部分真空

英英释义

例句

1.To prevent oxidation, the wine bottles are sealed under a partial vacuum.

为了防止氧化，葡萄酒瓶在局部真空下密封。

2.The scientist explained how a partial vacuum can reduce the boiling point of liquids.

科学家解释了如何通过局部真空降低液体的沸点。

3.The partial vacuum created inside the chamber allows for more efficient chemical reactions.

腔室内产生的局部真空使化学反应更加高效。

4.In the packaging industry, a partial vacuum is often used to extend the shelf life of food products.

在包装行业，通常使用局部真空来延长食品的保质期。

5.The lab created a partial vacuum to test the properties of the new material in a controlled environment.

实验室创造了一个局部真空以在受控环境中测试新材料的特性。

作文

In the realm of physics and engineering, the term partial vacuum refers to a space where the pressure is lower than the atmospheric pressure, but not completely devoid of matter. This concept is crucial in various applications, ranging from scientific research to industrial processes. Understanding what a partial vacuum entails can help us appreciate its significance in both theoretical and practical contexts.One of the most common uses of a partial vacuum is in the field of vacuum packaging. When food items are sealed in bags with the air removed, they are stored in a partial vacuum. This process helps to preserve the freshness of the food by slowing down the growth of bacteria and mold, as well as preventing oxidation that can lead to spoilage. The creation of a partial vacuum in this context is essential for extending shelf life and maintaining quality, making it an invaluable technique in the food industry.Another significant application of partial vacuum is in laboratory settings. Many experiments require a controlled environment where external variables can be minimized. For instance, when conducting experiments involving chemical reactions that are sensitive to air exposure, scientists often use a partial vacuum to eliminate unwanted gases that could interfere with their results. This controlled atmosphere allows for more accurate measurements and observations, ultimately leading to better scientific outcomes.In the field of medicine, partial vacuum technology is also utilized. For example, suction devices used in surgeries create a partial vacuum to remove fluids and debris from surgical sites. This helps maintain a clear view for surgeons and reduces the risk of infection. The ability to create a partial vacuum in medical procedures highlights its importance in ensuring patient safety and improving surgical outcomes.Furthermore, the concept of partial vacuum plays a role in the design of various mechanical systems. For instance, in certain types of pumps and engines, a partial vacuum is created to facilitate the movement of fluids or gases. The difference in pressure allows for the efficient transfer of materials, which is vital in many industrial processes. Understanding how to manipulate partial vacuum conditions can lead to innovations in energy efficiency and performance in machinery.In conclusion, the term partial vacuum encompasses a wide range of applications across different fields. From food preservation to scientific experimentation and medical procedures, the ability to create and maintain a partial vacuum is essential for achieving desired outcomes. As technology continues to advance, our understanding and utilization of partial vacuum will likely expand, leading to new discoveries and improvements in various sectors of society. Overall, grasping the concept of partial vacuum is fundamental for anyone interested in the sciences or engineering, as it represents a key principle that underpins many modern technologies and practices.

在物理和工程领域，术语部分真空指的是一个压力低于大气压力但并非完全没有物质的空间。这个概念在各种应用中至关重要，从科学研究到工业过程。理解部分真空的含义可以帮助我们欣赏它在理论和实践中的重要性。部分真空最常见的用途之一是在真空包装领域。当食品密封在去除空气的袋子中时，它们被存放在部分真空中。这一过程通过减缓细菌和霉菌的生长以及防止导致变质的氧化，帮助保持食品的新鲜度。在这种情况下，制造部分真空对于延长保质期和保持质量至关重要，使其成为食品工业中不可或缺的技术。部分真空的另一个重要应用是在实验室环境中。许多实验需要一个受控环境，以便将外部变量最小化。例如，在进行对空气暴露敏感的化学反应实验时，科学家通常使用部分真空来消除可能干扰结果的不必要气体。这种受控气氛允许更准确的测量和观察，最终导致更好的科学结果。在医学领域，部分真空技术也得到了应用。例如，在手术中使用的吸引装置会产生部分真空，以去除手术部位的液体和碎屑。这有助于保持外科医生的清晰视野，并降低感染风险。在医疗程序中能够产生部分真空突显了其在确保患者安全和改善手术结果方面的重要性。此外，部分真空的概念在各种机械系统的设计中也发挥着作用。例如，在某些类型的泵和发动机中，会产生部分真空以促进流体或气体的运动。压力差使材料的高效转移成为可能，这在许多工业过程中至关重要。理解如何操控部分真空条件可以带来能源效率和机械性能的创新。总之，术语部分真空涵盖了不同领域的一系列应用。从食品保存到科学实验和医疗程序，创造和维持部分真空的能力对于实现预期结果至关重要。随着技术的不断进步，我们对部分真空的理解和利用可能会进一步扩展，导致新发现和各个社会部门的改进。总体而言，掌握部分真空的概念对于任何对科学或工程感兴趣的人来说都是基础，因为它代表了支撑许多现代技术和实践的关键原则。