direct current

简明释义

直流电

英英释义

例句

1.In electronic circuits, direct current 直流电 is often used for stable voltage.

在电子电路中，直流电 直流电常用于稳定电压。

2.The battery provides direct current 直流电 to power the flashlight.

电池为手电筒提供直流电 直流电。

3.Solar panels generate direct current 直流电 that can be converted to alternating current.

太阳能电池板产生的直流电 直流电可以转换为交流电。

4.The charger outputs direct current 直流电 to charge the smartphone battery.

充电器输出的直流电 直流电用于给智能手机电池充电。

5.Many electronic devices require direct current 直流电 to function properly.

许多电子设备需要直流电 直流电才能正常工作。

作文

Direct current (DC) is a type of electrical current that flows consistently in one direction. This form of electricity is essential for many electronic devices and applications, making it a crucial concept in the field of electrical engineering. Unlike alternating current (AC), where the flow of electrons reverses direction periodically, direct current (直流电) maintains a steady flow, which is particularly important for devices that require a stable voltage supply.The history of direct current dates back to the late 19th century when Thomas Edison developed the first practical electric power distribution system. Edison's system used direct current to deliver electricity to homes and businesses. However, as the demand for electricity grew, the limitations of direct current became apparent, particularly over long distances. The loss of energy during transmission was significant, leading to the development of alternating current systems by inventors like Nikola Tesla.Despite the advantages of AC for long-distance transmission, direct current remains widely used in various applications today. For instance, batteries produce direct current, which powers everything from portable electronics like smartphones and laptops to larger systems such as electric vehicles. In these cases, direct current is preferred because it provides a stable and reliable source of power.In addition to batteries, solar panels also generate direct current. When sunlight hits the solar cells, it produces electricity in the form of direct current. This electricity can then be converted into alternating current using an inverter, allowing it to be used in home appliances or fed into the electrical grid. The growing popularity of renewable energy sources has increased the importance of understanding direct current as more systems rely on this form of electricity.Moreover, the rise of electronics and digital devices has further cemented the role of direct current in our daily lives. Many gadgets, including computers, televisions, and gaming consoles, operate on direct current. Power adapters are often used to convert AC from the wall outlet into direct current for these devices. Understanding how direct current works is vital for troubleshooting issues related to electronic equipment and ensuring their proper functioning.In summary, direct current (直流电) is a fundamental concept in electricity that describes a current flowing in a single direction. Its historical significance, practical applications in battery-operated devices, and role in renewable energy systems highlight its importance in modern technology. As we continue to innovate and develop new technologies, the understanding of direct current will remain crucial for engineers, technicians, and consumers alike. Whether it's powering our smartphones or harnessing solar energy, direct current plays an integral part in shaping the future of electricity.

直流电是一种电流类型，它以一致的方向持续流动。这种形式的电力对于许多电子设备和应用至关重要，使其成为电气工程领域中的一个重要概念。与交流电（AC）不同，交流电的电子流动会定期反转方向，而直流电（直流电）则保持稳定的流动，这对于需要稳定电压供电的设备尤其重要。直流电的历史可以追溯到19世纪末，当时托马斯·爱迪生开发了第一个实用的电力分配系统。爱迪生的系统使用直流电向家庭和企业提供电力。然而，随着对电力需求的增加，直流电的局限性变得显而易见，尤其是在长距离传输方面。传输过程中能量损失显著，导致尼古拉·特斯拉等发明家开发了交流电系统。尽管交流电在长距离传输中具有优势，但直流电今天仍被广泛用于各种应用。例如，电池产生直流电，为从智能手机和笔记本电脑等便携式电子设备到电动车辆等大型系统提供动力。在这些情况下，直流电是首选，因为它提供了稳定可靠的电源。除了电池，太阳能电池板也产生直流电。当阳光照射到太阳能电池时，会产生以直流电形式的电力。这种电力可以通过逆变器转换为交流电，从而允许用于家用电器或输入电网。可再生能源来源的日益普及增加了对理解直流电的重要性的认识，因为越来越多的系统依赖这种形式的电力。此外，电子产品和数字设备的兴起进一步巩固了直流电在我们日常生活中的作用。许多小工具，包括计算机、电视和游戏机，都是在直流电下运行的。电源适配器通常用于将墙壁插座中的交流电转换为直流电供这些设备使用。了解直流电的工作原理对于排除与电子设备相关的问题以及确保其正常运行至关重要。总之，直流电（直流电）是电力中的一个基本概念，描述了一种以单一方向流动的电流。它的历史意义、在电池供电设备中的实际应用以及在可再生能源系统中的作用凸显了它在现代技术中的重要性。随着我们继续创新并开发新技术，对直流电的理解将继续对工程师、技术人员和消费者至关重要。无论是为我们的智能手机供电还是利用太阳能，直流电在塑造电力的未来中扮演着不可或缺的角色。