expansion ratio

简明释义

展缩比

英英释义

例句

1.The manufacturer specifies an expansion ratio of 10:1 for this particular product.

制造商为该特定产品指定了10:1的膨胀比。

2.Understanding the expansion ratio helps in selecting the right materials for construction.

理解膨胀比有助于选择合适的建筑材料。

3.In thermodynamics, the expansion ratio can determine the efficiency of an engine.

在热力学中，膨胀比可以决定发动机的效率。

4.The expansion ratio of a gas can affect pressure and temperature in a closed system.

气体的膨胀比会影响封闭系统中的压力和温度。

5.The expansion ratio of the foam is crucial for its insulation properties.

泡沫的膨胀比对其绝缘性能至关重要。

作文

The concept of expansion ratio is crucial in various fields, particularly in engineering and physics. It refers to the ratio of the volume of a substance after it has expanded to its original volume before expansion. Understanding this ratio is essential for engineers who design engines, nozzles, and other systems that involve gases or fluids. For instance, in the context of internal combustion engines, the expansion ratio can significantly influence the efficiency and performance of the engine. A higher expansion ratio typically means that the engine can extract more energy from the fuel, leading to improved fuel efficiency and power output.In addition to engines, the expansion ratio is also relevant in the manufacturing of materials. When metals are heated, they expand, and understanding how much they will expand is critical for processes like welding and casting. If the expansion ratio is not accurately calculated, it could lead to structural weaknesses or failures in the final product. Therefore, engineers must consider the expansion ratio when selecting materials for specific applications.Moreover, the expansion ratio plays a significant role in the field of thermodynamics. In thermodynamic cycles, such as the Carnot cycle, the expansion ratio affects the efficiency of energy conversion processes. By optimizing the expansion ratio, engineers can enhance the performance of heat engines and refrigeration systems, thereby contributing to energy conservation efforts.In the context of natural phenomena, the expansion ratio is also observable in meteorology. For example, when air is heated, it expands, leading to changes in pressure and density. Understanding the expansion ratio of air can help meteorologists predict weather patterns and phenomena such as storms or heatwaves. This knowledge is vital for preparing for extreme weather events and mitigating their impacts on society.Furthermore, the expansion ratio is significant in the field of material science, especially in the development of polymers and composites. Different materials have varying expansion ratios, which can affect their behavior under temperature changes. Engineers and scientists must take these differences into account when designing products that will be subjected to thermal cycling.In conclusion, the expansion ratio is a fundamental concept that permeates many scientific and engineering disciplines. Its implications are far-reaching, affecting everything from the efficiency of engines to the reliability of materials in construction. A thorough understanding of the expansion ratio allows professionals to make informed decisions that enhance performance, safety, and sustainability in their respective fields. As technology continues to advance, the importance of accurately measuring and applying the expansion ratio will only grow, making it a vital area of study for future engineers and scientists.

“膨胀比”是一个在多个领域中至关重要的概念，特别是在工程和物理学中。它指的是物质在膨胀后体积与膨胀前原始体积的比率。理解这个比率对于设计发动机、喷嘴和其他涉及气体或流体的系统的工程师来说至关重要。例如，在内燃机的背景下，“膨胀比”可以显著影响发动机的效率和性能。较高的“膨胀比”通常意味着发动机能够从燃料中提取更多的能量，从而提高燃油效率和功率输出。除了发动机外，“膨胀比”在材料制造中也相关。当金属被加热时，它们会膨胀，理解它们将膨胀多少对于焊接和铸造等工艺至关重要。如果“膨胀比”没有被准确计算，可能会导致最终产品的结构弱点或故障。因此，工程师在为特定应用选择材料时必须考虑“膨胀比”。此外，“膨胀比”在热力学领域也起着重要作用。在热力学循环中，例如卡诺循环，“膨胀比”影响能量转化过程的效率。通过优化“膨胀比”，工程师可以提高热机和制冷系统的性能，从而有助于节能。在自然现象的背景下，“膨胀比”在气象学中也可观察到。例如，当空气被加热时，它会膨胀，导致压力和密度的变化。理解空气的“膨胀比”可以帮助气象学家预测天气模式和现象，例如风暴或热浪。这一知识对于准备极端天气事件并减轻其对社会的影响至关重要。此外，“膨胀比”在材料科学领域也具有重要意义，特别是在聚合物和复合材料的开发中。不同材料具有不同的“膨胀比”，这会影响它们在温度变化下的行为。工程师和科学家在设计将承受热循环的产品时，必须考虑这些差异。总之，“膨胀比”是一个基本概念，渗透到许多科学和工程学科中。它的影响深远，影响从发动机效率到建筑材料可靠性的方方面面。深入理解“膨胀比”使专业人士能够做出明智的决策，从而提升各自领域的性能、安全性和可持续性。随着科技的不断进步，准确测量和应用“膨胀比”的重要性只会增加，使其成为未来工程师和科学家研究的重要领域。