thermal activation

简明释义

热中子激活

英英释义

例句

1.During the experiment, we observed thermal activation leading to an increase in reaction rates.

在实验过程中，我们观察到热激活导致反应速率的增加。

2.In many chemical reactions, thermal activation can lower the energy barrier required for the reaction.

在许多化学反应中，热激活可以降低反应所需的能量障碍。

3.Researchers are studying the effects of thermal activation on the stability of certain materials at high temperatures.

研究人员正在研究热激活对某些材料在高温下稳定性的影响。

4.The process of thermal activation is essential for the catalytic reaction to occur efficiently.

对于催化反应的高效进行，热激活过程是必不可少的。

5.The thermal activation of enzymes is crucial for their functionality in biological processes.

热激活酶的过程对其在生物过程中的功能至关重要。

作文

Thermal activation is a fundamental concept in the field of physical chemistry and materials science. It refers to the process where heat energy is used to increase the kinetic energy of particles, thereby enabling them to overcome energy barriers and undergo chemical reactions or phase transitions. This phenomenon is crucial in various natural and industrial processes, such as catalysis, polymerization, and even biological reactions. Understanding thermal activation (热激活) allows scientists and engineers to manipulate conditions to optimize reaction rates and product yields.In many chemical reactions, reactants must reach a certain energy level to collide effectively and form products. This required energy is often referred to as the activation energy. When heat is applied to a system, it raises the temperature, which in turn increases the average kinetic energy of the molecules involved. As a result, a greater proportion of these molecules can achieve the necessary energy to surpass the activation barrier. This is where thermal activation (热激活) plays a vital role, as it directly influences the rate at which reactions occur.One of the most common examples of thermal activation (热激活) in action is in the process of combustion. When a fuel is ignited, the heat generated from the flame provides the energy needed for the fuel molecules to break their bonds and react with oxygen. The elevated temperature not only speeds up the reaction but also helps sustain it by continuously providing energy to the reactants. Without thermal activation (热激活), combustion would not occur efficiently, demonstrating its importance in everyday life.In the realm of materials science, thermal activation (热激活) is particularly significant in understanding how materials behave under different temperature conditions. For instance, in metallurgy, the heat treatment of metals often involves processes like annealing, quenching, and tempering, which rely on thermal activation (热激活) to alter the microstructure of the material. By controlling the temperature and duration of exposure, manufacturers can enhance the mechanical properties of metals, making them stronger or more ductile.Moreover, thermal activation (热激活) is also essential in biological systems. Enzymes, which are biological catalysts, require specific temperatures to function optimally. At low temperatures, the kinetic energy of substrates may be insufficient for effective collisions, while excessively high temperatures can denature enzymes, rendering them inactive. Therefore, understanding how thermal activation (热激活) affects enzyme activity is critical for fields such as biochemistry and biotechnology.In conclusion, thermal activation (热激活) is a key principle that governs many processes across different scientific disciplines. From enhancing reaction rates in chemical processes to optimizing the properties of materials and facilitating biological functions, the role of heat energy cannot be understated. As we continue to explore and innovate in science and technology, a deeper understanding of thermal activation (热激活) will undoubtedly lead to advancements that improve efficiency and effectiveness in various applications.