direct current (d.c.)

简明释义

直流电流

英英释义

例句

1.When charging a smartphone, it uses direct current (d.c.) from the charger.

在给智能手机充电时，它使用充电器提供的直流电 (d.c.)。

2.Electric vehicles rely on direct current (d.c.) batteries for propulsion.

电动汽车依赖于直流电 (d.c.)电池进行驱动。

3.In electronic circuits, direct current (d.c.) is often used for powering devices.

在电子电路中，直流电 (d.c.)通常用于为设备供电。

4.Solar panels generate direct current (d.c.) which can be converted to alternating current.

太阳能电池板产生的直流电 (d.c.)可以转换为交流电。

5.The battery provides direct current (d.c.) to power the flashlight.

电池提供直流电 (d.c.)来为手电筒供电。

作文

In the world of electricity, understanding the different types of current is essential for both professionals and enthusiasts alike. One of the most fundamental types of electrical current is known as direct current (d.c.). This term refers to the unidirectional flow of electric charge, meaning that the current flows in a single direction. Unlike alternating current (a.c.), which periodically reverses direction, direct current (d.c.) maintains a constant polarity, making it particularly useful in various applications.The significance of direct current (d.c.) can be observed in numerous devices we use every day. For instance, batteries provide direct current (d.c.) as they release energy in a steady flow. This is crucial for powering handheld devices such as smartphones, flashlights, and remote controls. The stability of direct current (d.c.) ensures that these devices operate efficiently without fluctuations in power supply, which could lead to malfunctions or damage.Moreover, direct current (d.c.) is widely used in solar power systems. Solar panels generate electricity in the form of direct current (d.c.), which must be converted to alternating current (a.c.) for use in homes and businesses. This conversion process is typically achieved through an inverter, allowing the direct current (d.c.) generated by solar panels to be utilized effectively in the electrical grid.In addition to its applications in batteries and solar energy, direct current (d.c.) is also used in various industrial processes. For example, electroplating, a method used to deposit a layer of metal onto a surface, requires a direct current (d.c.) supply to ensure a consistent and even coating. The ability to control the flow of direct current (d.c.) allows manufacturers to achieve precise results in their products.Another area where direct current (d.c.) is gaining traction is in the realm of electric vehicles (EVs). EVs rely on batteries that store and provide direct current (d.c.) to power electric motors. The efficiency of direct current (d.c.) is a significant advantage in this context, as it allows for rapid acceleration and smooth operation, enhancing the overall driving experience.Despite its many advantages, direct current (d.c.) does have some limitations. One of the primary challenges is the difficulty in transmitting direct current (d.c.) over long distances. High-voltage direct current (d.c.) transmission systems are being developed to address this issue, but they require advanced technology and infrastructure. In contrast, alternating current (a.c.) can be easily transformed to higher voltages, making it more efficient for long-distance transmission.In conclusion, direct current (d.c.) plays a vital role in our modern electrical systems. Its unique properties make it indispensable in various applications, from everyday devices to complex industrial processes. As technology continues to evolve, the importance of direct current (d.c.) will likely grow, paving the way for new innovations and improved efficiency in how we generate and use electricity. Understanding direct current (d.c.) is not just beneficial for those in the field of electronics; it is essential for anyone looking to grasp the fundamentals of electrical engineering and energy consumption.

在电力的世界中，理解不同类型的电流对于专业人士和爱好者来说都是必不可少的。其中一种最基本的电流类型被称为直流电（d.c.）。这个术语指的是电荷的单向流动，意味着电流以单一方向流动。与周期性反转方向的交流电（a.c.）不同，直流电（d.c.）保持恒定的极性，这使其在各种应用中尤其有用。直流电（d.c.）的重要性可以在我们每天使用的许多设备中观察到。例如，电池提供直流电（d.c.），因为它们以稳定的流动释放能量。这对为智能手机、手电筒和遥控器等手持设备供电至关重要。直流电（d.c.）的稳定性确保这些设备高效运行，不会因电源供应波动而导致故障或损坏。此外，直流电（d.c.）广泛用于太阳能发电系统。太阳能电池板以直流电（d.c.）的形式产生电力，这必须通过逆变器转换为交流电（a.c.），以便在家庭和企业中使用。这一转换过程通常通过逆变器实现，使得太阳能电池板生成的直流电（d.c.）能够有效地用于电网。除了在电池和太阳能中的应用外，直流电（d.c.）还在各种工业过程中使用。例如，电镀是一种用于将金属层沉积到表面的方法，要求提供直流电（d.c.）供应，以确保涂层均匀一致。控制直流电（d.c.）的流动能力使制造商能够在产品中实现精确的结果。直流电（d.c.）正在电动车辆（EV）领域获得越来越多的关注。电动车依赖于存储和提供直流电（d.c.）以驱动电动机的电池。在这种情况下，直流电（d.c.）的效率是一个显著的优势，因为它允许快速加速和平稳操作，从而增强整体驾驶体验。尽管有许多优点，直流电（d.c.）也存在一些局限性。其中一个主要挑战是长距离传输直流电（d.c.）的困难。正在开发高压直流电（d.c.）传输系统以解决此问题，但它们需要先进的技术和基础设施。相比之下，交流电（a.c.）可以轻松变换为更高的电压，使其在长距离传输中更有效。总之，直流电（d.c.）在我们现代电力系统中发挥着至关重要的作用。其独特的特性使其在从日常设备到复杂工业过程的各种应用中不可或缺。随着技术的不断发展，直流电（d.c.）的重要性可能会增长，为新创新和提高我们发电和使用电力的效率铺平道路。理解直流电（d.c.）不仅对电子领域的人士有益；它对于任何希望掌握电气工程和能源消费基础知识的人来说都是至关重要的。