expansion ratio

简明释义

膨胀比;展缩比

英英释义

例句

1.We calculated the expansion ratio of the rubber material under different temperatures.

我们计算了橡胶材料在不同温度下的膨胀比。

2.A higher expansion ratio can lead to better performance in turbochargers.

更高的膨胀比可以提高涡轮增压器的性能。

3.In this experiment, we will measure the expansion ratio of the gas when heated.

在这个实验中，我们将测量气体加热时的膨胀比。

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

泡沫的膨胀比对于确定其绝缘性能至关重要。

5.The expansion ratio in this engine affects its efficiency and power output.

该发动机中的膨胀比会影响其效率和功率输出。

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 gas or fluid after expansion to its volume before expansion. Understanding this ratio can help in designing systems that involve gas dynamics, such as engines and turbines. For instance, in an internal combustion engine, the expansion ratio determines how effectively the engine converts fuel into mechanical energy. A higher expansion ratio typically indicates better efficiency, as it allows for more complete combustion and greater energy extraction from the fuel. In the context of thermodynamics, the expansion ratio plays a significant role in the performance of heat engines. According to the principles of thermodynamics, the efficiency of a heat engine is directly related to its expansion ratio. When a gas expands, it does work on its surroundings, and the amount of work done is influenced by the ratio of the initial and final volumes of the gas. Therefore, engineers often strive to optimize the expansion ratio to maximize the output power of engines and reduce fuel consumption.Moreover, the expansion ratio is also relevant in the field of meteorology. In weather forecasting, understanding how air expands as it rises can help predict storm formation and intensity. As warm air rises, it expands due to lower pressure at higher altitudes, which can lead to cloud formation and precipitation. Meteorologists use the concept of expansion ratio to model these processes accurately.In the realm of material science, the expansion ratio can describe how materials respond to temperature changes. When heated, materials tend to expand, and the expansion ratio quantifies this change. This property is essential when selecting materials for construction or manufacturing, as different materials have different thermal expansion characteristics. Engineers must consider the expansion ratio to prevent structural failures due to temperature fluctuations.In summary, the expansion ratio is a vital parameter across multiple disciplines, influencing efficiency, performance, and safety. By understanding and applying the concept of expansion ratio, professionals can make informed decisions that enhance the functionality and reliability of systems and materials. As technology continues to advance, the importance of the expansion ratio will likely grow, making it an essential topic for study in engineering, physics, meteorology, and material science.

“膨胀比”这一概念在多个领域中至关重要，特别是在工程和物理学中。它指的是气体或流体在膨胀后体积与膨胀前体积的比率。理解这一比率可以帮助设计涉及气体动力学的系统，例如发动机和涡轮机。例如，在内燃机中，“膨胀比”决定了发动机将燃料转化为机械能的有效性。较高的“膨胀比”通常表示更好的效率，因为它允许更完全的燃烧和从燃料中提取更多的能量。在热力学的背景下，“膨胀比”在热机的性能中起着重要作用。根据热力学原理，热机的效率与其“膨胀比”直接相关。当气体膨胀时，它对周围环境做功，而所做的功量受到气体初始和最终体积比率的影响。因此，工程师通常努力优化“膨胀比”，以最大化发动机的输出功率并减少燃料消耗。此外，“膨胀比”在气象学领域也很相关。在天气预报中，理解空气如何在上升时膨胀可以帮助预测风暴的形成和强度。当温暖的空气上升时，由于较高海拔处的压力较低，它会膨胀，这可能导致云的形成和降水。气象学家使用“膨胀比”的概念来准确建模这些过程。在材料科学领域，“膨胀比”可以描述材料对温度变化的反应。当材料加热时，通常会膨胀，而“膨胀比”量化了这种变化。这一特性在选择建筑或制造材料时至关重要，因为不同的材料具有不同的热膨胀特性。工程师必须考虑“膨胀比”，以防止由于温度波动导致的结构故障。总之，“膨胀比”是多个学科中的一个重要参数，影响效率、性能和安全性。通过理解和应用“膨胀比”这一概念，专业人士可以做出明智的决策，从而增强系统和材料的功能性和可靠性。随着技术的不断进步，“膨胀比”的重要性可能会进一步增加，使其成为工程、物理学、气象学和材料科学研究的重要主题。