permanent magnetic

简明释义

永久磁铁

英英释义

例句

1.Many toys use permanent magnetic 永磁的 pieces to create engaging play experiences.

许多玩具使用永磁的部件来创造有趣的游戏体验。

2.The permanent magnetic 永磁的 levitation system allows trains to float above the tracks.

该永磁的悬浮系统使火车能够漂浮在轨道上。

3.The refrigerator uses a permanent magnetic 永磁的 door seal to keep the cold air inside.

冰箱使用永磁的门密封来保持冷空气在内部。

4.In electric motors, permanent magnetic 永磁的 fields are essential for efficient operation.

在电动机中，永磁的磁场对高效运行至关重要。

5.The speaker system utilizes permanent magnetic 永磁的 components to enhance sound quality.

音响系统利用永磁的组件来增强音质。

作文

In the world of physics and engineering, magnets play a crucial role in various applications. One of the most significant types of magnets is the permanent magnetic (永久磁铁). Unlike temporary magnets that can lose their magnetism over time, permanent magnetic materials maintain their magnetic properties indefinitely. This unique characteristic makes them invaluable in numerous devices and technologies. The science behind permanent magnetic materials involves the alignment of magnetic domains within the material. When certain metals, such as iron, cobalt, and nickel, are exposed to a strong magnetic field, their atomic structure aligns in such a way that they become magnetized. Once this alignment occurs, these materials can retain their magnetism even after the external magnetic field is removed, thus becoming permanent magnetic (永久磁铁).One of the most common applications of permanent magnetic materials is in electric motors. In these motors, permanent magnetic components are used to create a magnetic field that interacts with electric currents, allowing for efficient motion and energy conversion. This application is not only critical in small devices like fans and toys but also in larger systems such as electric vehicles and industrial machinery.Another important use of permanent magnetic materials is in magnetic storage devices. Hard drives, which store vast amounts of data, utilize permanent magnetic technology to record and retrieve information. The ability of permanent magnetic materials to hold data without requiring power makes them an essential part of modern computing.In addition to these applications, permanent magnetic systems are also employed in various household items. For instance, refrigerator magnets, which help keep notes and reminders in place, are made from permanent magnetic materials. Similarly, magnetic clasps on bags and jewelry often rely on the strength of permanent magnetic forces to function effectively.The advantages of permanent magnetic materials extend beyond their functionality. They are generally more reliable than electromagnets, which require a continuous power supply to maintain their magnetic field. This reliability translates into lower maintenance costs and improved efficiency in many applications. Furthermore, advancements in material science have led to the development of stronger and more versatile permanent magnetic materials, expanding their use in innovative technologies.However, it is essential to note that permanent magnetic materials are not without limitations. Their performance can be affected by temperature changes, and extreme heat can demagnetize them. Additionally, while they can be very strong, the force exerted by a permanent magnetic can be limited compared to electromagnets, which can be turned on and off and adjusted based on the required strength.In conclusion, permanent magnetic (永久磁铁) materials are a fundamental aspect of modern technology and engineering. Their ability to maintain a stable magnetic field without the need for continuous power makes them indispensable in various applications, from electric motors to data storage devices. As technology continues to evolve, the role of permanent magnetic materials will likely expand, leading to even more innovative uses in our daily lives.

在物理和工程的世界中，磁铁在各种应用中扮演着至关重要的角色。其中最重要的磁铁类型之一是永久磁铁。与会随着时间推移而失去磁性的临时磁铁不同，永久磁铁材料能够无限期地保持其磁性。这一独特特性使它们在众多设备和技术中变得不可或缺。永久磁铁材料的科学原理涉及到材料内部磁畴的排列。当某些金属如铁、钴和镍暴露在强磁场中时，它们的原子结构会以一种方式对齐，从而被磁化。一旦这种对齐发生，这些材料即使在外部磁场被移除后也能保持其磁性，从而成为永久磁铁。永久磁铁材料最常见的应用之一是在电动机中。在这些电动机中，永久磁铁组件用于创建一个与电流相互作用的磁场，从而实现高效的运动和能量转换。这一应用不仅在小型设备如风扇和玩具中至关重要，在大型系统如电动汽车和工业机械中也同样重要。永久磁铁材料的另一个重要用途是在磁存储设备中。硬盘驱动器存储大量数据，利用永久磁铁技术来记录和检索信息。永久磁铁材料能够在不需要电力的情况下保持数据，使其成为现代计算机的基本组成部分。除了这些应用，永久磁铁系统还用于各种家用物品。例如，冰箱磁铁帮助将便条和提醒固定在墙上，它们是由永久磁铁材料制成的。类似地，包和首饰上的磁扣通常依赖于永久磁铁的力量来有效地工作。永久磁铁材料的优势不仅体现在其功能上。与需要持续电源来维持其磁场的电磁铁相比，它们通常更可靠。这种可靠性转化为更低的维护成本和许多应用中的效率提高。此外，材料科学的进步导致了更强大和更通用的永久磁铁材料的发展，扩大了它们在创新技术中的使用。然而，需要注意的是，永久磁铁材料并非没有局限性。其性能可能受到温度变化的影响，极端的高温可能导致它们失去磁性。此外，虽然它们可以非常强大，但与可以开关和根据所需强度调整的电磁铁相比，永久磁铁施加的力量可能有限。总之，永久磁铁材料是现代技术和工程的基本方面。它们能够在不需要持续电力的情况下保持稳定的磁场，使它们在电动机到数据存储设备等各种应用中不可或缺。随着技术的不断发展，永久磁铁材料的作用可能会扩大，导致我们日常生活中更多创新的用途。