polycrystalline

简明释义

英[ˌpɒlɪˈkrɪstəˌlaɪn]美[pɒlɪˈkrɪstəlaɪn]

adj. （金属或其他固体）多晶的

英英释义

单词用法

同义词

反义词

例句

1.XRD analysis of these samples indicated this series of polycrystalline samples possess perovskite structure at room temperature.

XRD分析表明室温时此系列多晶样品都是单相，具有钙钛矿结构。

2.Intergranular fracture. Fracture of polycrystalline materials by crack propagation along grain boundaries.

多晶材料裂纹沿着晶界扩展而断裂。

3.The Polycrystalline structure and the phase composition of cordierite kiln furniture are deter-mined by means of X-ray and electron microscope.

利用X-射线衍射分析和电子显微镜分析的结果，确定堇青石窑具的多晶结构和各晶相的含量；

4.The main products from RICH SOLAR are mono-crystalline and polycrystalline solar cells and solar modules.

RICHSOLAR主要产品为单晶、多晶硅太阳能电池片、组件。

5.Technique process of growth of the polycrystalline silicon is based on the adjustment of the heating chamber.

多晶硅锭的生长工艺过程都要通过加热室的调整来实现。

6.Heating chamber is pivotal part of the polycrystalline silicon ingot production furnace.

加热室是多晶硅铸锭炉的关键部件之一。

7.Transgranular fracture. Fracture of polycrystalline materials by crack propagation through the grains.

多晶材料裂纹穿过晶粒扩展而断裂。

8.The polycrystalline 多晶体 diamond is used in cutting tools due to its hardness.

由于其硬度，多晶体钻石被用于切割工具。

9.Researchers are studying the thermal properties of polycrystalline 多晶体 materials for better insulation.

研究人员正在研究多晶体材料的热性能，以便获得更好的绝缘效果。

10.The solar panel is made of high-efficiency polycrystalline 多晶体 silicon cells.

这个太阳能电池板由高效的多晶体硅电池组成。

11.In the manufacturing of ceramics, polycrystalline 多晶体 materials are often preferred for their strength.

在陶瓷制造中，通常优先选择多晶体材料，因为它们更坚固。

12.The polycrystalline 多晶体 structure of the metal enhances its durability.

金属的多晶体结构增强了其耐用性。

作文

The term polycrystalline refers to a material that is composed of many small crystals or grains. This structure can be found in various materials, including metals, ceramics, and semiconductors. Understanding polycrystalline materials is essential in fields such as materials science and engineering, as they exhibit distinct properties compared to their single-crystal counterparts. For instance, the mechanical properties of polycrystalline materials are influenced by the arrangement and size of the individual grains, making them suitable for different applications.In the realm of metals, polycrystalline structures are prevalent. Most metals used in construction and manufacturing are polycrystalline. The grain boundaries in these materials play a critical role in determining their strength and ductility. When subjected to stress, the grains can deform, allowing the metal to absorb energy without fracturing. This property is vital for ensuring the durability and reliability of structural components.Additionally, polycrystalline materials are widely used in the production of solar cells. In photovoltaic technology, polycrystalline silicon is often favored due to its cost-effectiveness and decent efficiency in converting sunlight into electricity. The process of creating polycrystalline silicon involves melting silicon and allowing it to crystallize into multiple grains. This method is less expensive than producing single-crystal silicon, making it accessible for large-scale solar energy projects.Another significant application of polycrystalline materials is in the field of ceramics. Many ceramic products, from tiles to advanced engineering ceramics, are polycrystalline. The properties of these ceramics can be tailored by adjusting the size and distribution of the grains within the material. For example, finer grains can enhance the strength and toughness of the ceramic, making it more resistant to cracking and wear.Moreover, the study of polycrystalline materials extends to the development of superconductors. Researchers are investigating how the grain structure affects the superconducting properties of certain materials. By manipulating the polycrystalline structure, scientists aim to improve the performance of superconductors, which have applications in magnetic resonance imaging (MRI) machines, particle accelerators, and energy storage systems.In conclusion, the concept of polycrystalline materials is crucial across various industries, from construction to renewable energy. Their unique structural characteristics offer advantages that single-crystal materials may not provide. As technology advances, the understanding and manipulation of polycrystalline materials will continue to play a significant role in innovation and development. Therefore, grasping the implications of polycrystalline structures is essential for anyone involved in materials science or engineering, as these materials will undoubtedly shape the future of many technological advancements.

术语polycrystalline指的是由许多小晶体或晶粒组成的材料。这种结构可以在各种材料中找到，包括金属、陶瓷和半导体。理解polycrystalline材料在材料科学和工程等领域至关重要，因为它们与单晶材料相比表现出不同的特性。例如，polycrystalline材料的机械性能受到个别晶粒的排列和大小的影响，使它们适合不同的应用。在金属领域，polycrystalline结构是普遍存在的。大多数用于建筑和制造的金属都是polycrystalline。这些材料中的晶界在决定其强度和延展性方面起着关键作用。当承受压力时，晶粒可以变形，使金属能够在不破裂的情况下吸收能量。这一特性对确保结构组件的耐久性和可靠性至关重要。此外，polycrystalline材料广泛应用于太阳能电池的生产。在光伏技术中，polycrystalline硅通常因其成本效益和良好的光电转换效率而受到青睐。生产polycrystalline硅的过程涉及熔化硅并允许其结晶成多个晶粒。这种方法比生产单晶硅便宜，使其在大规模太阳能项目中更具可及性。polycrystalline材料的另一个重要应用是在陶瓷领域。从瓷砖到先进工程陶瓷，许多陶瓷产品都是polycrystalline的。这些陶瓷的特性可以通过调整材料中晶粒的大小和分布来定制。例如，更细的晶粒可以增强陶瓷的强度和韧性，使其更能抵抗开裂和磨损。此外，对polycrystalline材料的研究还扩展到超导体的开发。研究人员正在调查晶粒结构如何影响某些材料的超导性能。通过操控polycrystalline结构，科学家们旨在提高超导体的性能，这些超导体在磁共振成像（MRI）设备、粒子加速器和能源存储系统中有应用。总之，polycrystalline材料的概念在各个行业中至关重要，从建筑到可再生能源。它们独特的结构特性提供了单晶材料可能无法提供的优势。随着技术的进步，对polycrystalline材料的理解和操控将继续在创新和发展中发挥重要作用。因此，掌握polycrystalline结构的含义对于任何参与材料科学或工程的人来说都是必不可少的，因为这些材料无疑将塑造许多技术进步的未来。