expansion ratio

简明释义

膨胀系数

英英释义

例句

1.In the context of engines, the expansion ratio is crucial for determining efficiency.

在发动机的上下文中，膨胀比对确定效率至关重要。

2.The expansion ratio of gases can change significantly with temperature.

气体的膨胀比可能会随着温度的变化而显著改变。

3.The expansion ratio of the material determines how much it will expand when heated.

材料的膨胀比决定了在加热时它将膨胀多少。

4.A higher expansion ratio usually results in greater power output in turbines.

更高的膨胀比通常会导致涡轮机更大的功率输出。

5.When designing insulation materials, the expansion ratio affects thermal performance.

在设计绝缘材料时，膨胀比影响热性能。

作文

In the field of science and engineering, the term expansion ratio refers to the ratio of the volume of a gas or liquid after it has expanded to the volume it occupied before expansion. This concept is particularly significant in thermodynamics, where understanding how gases behave under varying temperatures and pressures can lead to more efficient designs in engines and other machinery. The expansion ratio is crucial for engineers who design systems that rely on gas expansion, such as jet engines and internal combustion engines.To illustrate the importance of the expansion ratio, consider the operation of a jet engine. When fuel is burned, it generates hot gases that expand rapidly. The expansion ratio determines how much these gases will expand relative to their initial volume, which in turn affects the thrust produced by the engine. A higher expansion ratio typically results in greater efficiency, allowing the engine to produce more power with less fuel.Moreover, the expansion ratio is not only relevant in aviation but also plays a critical role in various industries, including automotive, aerospace, and even HVAC (heating, ventilation, and air conditioning) systems. For instance, in an internal combustion engine, the expansion ratio is a key factor in determining the engine's thermal efficiency. A higher expansion ratio means that the engine can extract more work from the heat generated during combustion, translating into better fuel economy and reduced emissions.In HVAC systems, the expansion ratio helps engineers design more effective cooling and heating systems. By understanding how refrigerants expand and contract, engineers can optimize the performance of air conditioning units and refrigerators. A well-designed system that takes the expansion ratio into account can significantly reduce energy consumption, making it both cost-effective and environmentally friendly.Furthermore, the expansion ratio is also relevant in the context of material science. When materials are heated, they tend to expand, and the expansion ratio can indicate how much a given material will expand under certain conditions. This information is vital for engineers and architects who need to ensure that structures can withstand temperature fluctuations without suffering damage.In conclusion, the concept of expansion ratio is integral to many fields of study and industry applications. Its implications stretch from improving the efficiency of engines to optimizing HVAC systems and ensuring the integrity of materials used in construction. Understanding the expansion ratio allows professionals to make informed decisions that lead to innovations and improvements across various sectors. As technology continues to advance, the significance of the expansion ratio will likely grow, highlighting the need for ongoing research and education in this area.

在科学和工程领域，术语膨胀比指的是气体或液体在膨胀后所占体积与膨胀前所占体积的比率。这个概念在热力学中尤为重要，因为理解气体在不同温度和压力下的行为可以导致发动机和其他机械设备更高效的设计。膨胀比对于设计依赖于气体膨胀的系统的工程师至关重要，例如喷气发动机和内燃机。为了说明膨胀比的重要性，考虑喷气发动机的操作。当燃料燃烧时，会产生快速膨胀的热气体。膨胀比决定了这些气体相对于其初始体积的膨胀程度，这反过来又影响了发动机产生的推力。通常情况下，更高的膨胀比会导致更高的效率，使发动机能够以更少的燃料产生更多的功率。此外，膨胀比不仅与航空相关，还在汽车、航空航天甚至HVAC（供暖、通风和空调）系统等多个行业中发挥着关键作用。例如，在内燃机中，膨胀比是决定发动机热效率的关键因素。更高的膨胀比意味着发动机可以从燃烧过程中产生的热量中提取更多的功，从而转化为更好的燃油经济性和减少排放。在HVAC系统中，膨胀比帮助工程师设计更有效的制冷和加热系统。通过理解制冷剂的膨胀和收缩，工程师可以优化空调单元和冰箱的性能。一个充分考虑膨胀比的设计良好的系统可以显著减少能源消耗，使其既具有成本效益又环保。此外，膨胀比在材料科学的背景下也很相关。当材料加热时，它们往往会膨胀，而膨胀比可以指示在某些条件下给定材料将膨胀多少。这些信息对需要确保结构能承受温度波动而不受损坏的工程师和建筑师至关重要。总之，膨胀比的概念在许多研究领域和行业应用中都是不可或缺的。它的影响从提高发动机效率到优化HVAC系统，再到确保建筑材料的完整性。了解膨胀比使专业人士能够做出明智的决策，从而在各个领域推动创新和改进。随着技术的不断进步，膨胀比的重要性可能会进一步增长，突显出在这一领域持续研究和教育的必要性。