direct-current mains

简明释义

直流电网

英英释义

例句

1.We need to check the voltage levels on the direct-current mains before starting the machines.

在启动机器之前，我们需要检查直流电源的电压水平。

2.The technician repaired the fault in the direct-current mains system last night.

技术人员昨晚修复了直流电源系统的故障。

3.Many renewable energy systems utilize direct-current mains for better integration.

许多可再生能源系统利用直流电源以更好地集成。

4.The new factory is equipped with a reliable direct-current mains to ensure stable power supply.

新工厂配备了可靠的直流电源以确保稳定的电力供应。

5.Using a direct-current mains can improve the efficiency of our electronic devices.

使用直流电源可以提高我们的电子设备的效率。

作文

In the modern world, electricity is a fundamental part of our daily lives. It powers our homes, industries, and devices, making it essential for progress and convenience. Among the various forms of electrical supply, one notable type is the direct-current mains (直流电源). This term refers to a system where electric current flows in a single direction, typically used in battery-powered devices and some specialized applications.The concept of direct-current mains is crucial for understanding how certain electrical systems operate. Unlike alternating current (AC), which periodically reverses direction, direct current maintains a constant flow. This characteristic makes it particularly suitable for electronic circuits and devices that require stable voltage levels. For instance, most of our portable gadgets, such as smartphones and laptops, rely on batteries that provide direct-current mains to function efficiently.One of the primary advantages of using direct-current mains is its simplicity. The design of circuits that utilize direct current is often less complex than those that use alternating current. This simplicity can lead to reduced costs in manufacturing and maintenance. Additionally, many electronic components, like diodes and transistors, are designed to work with direct current, enabling better performance in various applications.However, the use of direct-current mains is not without its challenges. One significant issue is the difficulty in transmitting direct current over long distances. While AC can be easily transformed to higher voltages for efficient long-distance transmission, direct current faces limitations in this regard. As a result, most power grids utilize alternating current for distribution, converting it to direct current only when necessary for specific applications.In recent years, there has been a resurgence of interest in direct-current mains due to advancements in technology and the growing demand for renewable energy sources. Solar panels, for example, generate direct current, which can be directly utilized by compatible devices or stored in batteries for later use. This shift towards renewable energy has sparked innovations in how we harness and distribute electricity, leading to new systems that incorporate direct current more effectively.Moreover, the rise of electric vehicles (EVs) has further emphasized the importance of direct-current mains. EV charging stations often use direct current to charge batteries quickly and efficiently. As the demand for electric vehicles continues to grow, the infrastructure surrounding direct-current mains is likely to expand, promoting a more sustainable future.In conclusion, understanding direct-current mains (直流电源) is vital in today's electrified world. Its unique properties make it indispensable for various applications, especially in electronics and renewable energy systems. As technology continues to evolve, the role of direct current in our energy landscape may become even more prominent, influencing how we generate, distribute, and consume electricity. By recognizing the significance of direct-current mains, we can better appreciate the complexities and advancements in electrical engineering that shape our modern lives.