crystallization by cooling

简明释义

冷却式结晶化

英英释义

例句

1.The artist used crystallization by cooling techniques to create beautiful glass sculptures.

艺术家使用冷却结晶技术来创作美丽的玻璃雕塑。

2.The process of making rock candy involves crystallization by cooling, where a sugar solution is allowed to cool and form crystals.

制作岩石糖的过程涉及到冷却结晶，其中糖溶液被允许冷却并形成晶体。

3.During the production of certain pharmaceuticals, crystallization by cooling helps purify the active ingredients.

在某些药品的生产过程中，冷却结晶有助于纯化活性成分。

4.In metallurgy, crystallization by cooling is crucial for determining the properties of metals.

在冶金中，冷却结晶对于决定金属的性质至关重要。

5.The formation of ice from water is a classic example of crystallization by cooling.

水变成冰是一个经典的冷却结晶的例子。

作文

Crystallization is a fascinating process that occurs in various natural and industrial settings. One specific method of crystallization is known as crystallization by cooling. This technique involves the formation of solid crystals from a liquid solution as the temperature decreases. The concept is not only essential in chemistry but also plays a significant role in many industries, including food production, pharmaceuticals, and materials science.When a solution is heated, the solute particles are more energetic, allowing them to remain in a dissolved state. However, as the temperature drops, the kinetic energy of these particles decreases, leading to a point where they can no longer remain in solution. At this stage, the solute begins to aggregate and form solid crystals. The rate at which this process occurs can be influenced by several factors, including the concentration of the solution, the rate of cooling, and the presence of impurities.In the food industry, crystallization by cooling is a critical process in making candies and chocolates. For instance, when sugar syrup is heated and then cooled rapidly, it can form fine sugar crystals that contribute to the texture of the final product. Conversely, if the cooling is slow, larger crystals may form, resulting in a grainy texture that is often undesirable. Therefore, controlling the cooling rate is crucial for achieving the desired quality in confectionery products.Similarly, in the pharmaceutical industry, crystallization by cooling is used to purify compounds and produce drugs in their solid forms. Many active pharmaceutical ingredients (APIs) are obtained through this method, as it helps to separate the desired compounds from impurities effectively. By carefully managing the cooling process, manufacturers can ensure that the resulting crystals have the correct size and purity, which are vital for the efficacy and safety of the medications.Moreover, crystallization by cooling is also applicable in materials science, particularly in the production of metals and alloys. When molten metal cools, it undergoes crystallization, forming a solid structure with specific properties. The arrangement of atoms in these crystals can significantly affect the material's strength, ductility, and overall performance. Engineers often manipulate the cooling rates during metal casting to achieve desired characteristics in the final product, demonstrating the importance of this process in engineering applications.In conclusion, crystallization by cooling is a vital process that has far-reaching implications across various fields. Understanding how temperature influences the formation of crystals allows scientists and engineers to harness this phenomenon for practical applications. Whether in creating delectable sweets, synthesizing life-saving medications, or developing advanced materials, the principles of crystallization by cooling continue to play a pivotal role in innovation and industry. As we delve deeper into the study of crystallization, we uncover new techniques and methods that can enhance our ability to control and utilize this fascinating process effectively.

结晶是一个迷人的过程，发生在各种自然和工业环境中。其中一种特定的结晶方法被称为通过冷却结晶。这种技术涉及到固体晶体从液体溶液中形成，随着温度的降低。这个概念不仅在化学中至关重要，而且在许多行业中也发挥着重要作用，包括食品生产、制药和材料科学。当溶液被加热时，溶质粒子的能量更高，使它们保持在溶解状态。然而，随着温度的下降，这些粒子的动能减少，导致它们无法再保持在溶液中。在这个阶段，溶质开始聚集并形成固体晶体。这个过程发生的速率可以受到多个因素的影响，包括溶液的浓度、冷却的速度以及杂质的存在。在食品行业中，通过冷却结晶是制作糖果和巧克力的关键过程。例如，当糖浆被加热然后迅速冷却时，它可以形成细小的糖晶，增加最终产品的质地。相反，如果冷却速度较慢，则可能形成较大的晶体，导致通常不希望出现的颗粒感。因此，控制冷却速度对于实现糖果产品所需的质量至关重要。同样，在制药行业中，通过冷却结晶用于提纯化合物并以固体形式生产药物。许多活性药物成分（API）都是通过这种方法获得的，因为它有助于有效地将所需化合物与杂质分离。通过精心管理冷却过程，制造商可以确保最终晶体具有正确的大小和纯度，这对药物的功效和安全性至关重要。此外，通过冷却结晶还适用于材料科学，特别是在金属和合金的生产中。当熔融金属冷却时，它会经历结晶，形成具有特定属性的固体结构。这些晶体中原子的排列可以显著影响材料的强度、延展性和整体性能。工程师通常在金属铸造过程中操控冷却速率，以实现最终产品的期望特性，展示了这一过程在工程应用中的重要性。总之，通过冷却结晶是一个重要的过程，对各个领域产生深远的影响。理解温度如何影响晶体的形成使科学家和工程师能够利用这一现象进行实际应用。无论是在创造美味的糖果、合成拯救生命的药物，还是开发先进材料，通过冷却结晶的原理继续在创新和工业中发挥关键作用。随着我们深入研究结晶，我们发现新的技术和方法，可以增强我们有效控制和利用这一迷人过程的能力。