DC, or Direct Current, flows in a single direction without reversing."
DC，即直流电，电流在一个方向上流动，不会反转。
The electric motor in my car runs on
DC power from the battery.
我车上的电动机由电池提供的直流电驱动。
A solar panel converts sunlight into direct current electricity.
太阳能板将阳光转化为直流电。
In a circuit, AC and
DC can coexist, but they are often separated for efficiency.
在电路中，交流电和直流电可以共存，但为了效率通常会分开处理。
Batteries are typically used to store
DC power for portable devices.
电池通常用于为便携式设备储存直流电。
DC voltage is safer than alternating current (AC) when handling electronic components.
直流电压在处理电子元件时比交流电更安全。
The voltage regulator in a computer adjusts the
DC output to maintain a stable system.
计算机中的稳压器调整直流输出以保持系统稳定。
DC trains are popular in some cities for their quiet operation and reduced maintenance requirements.
直流火车在某些城市受欢迎，因其运行安静且维护需求较低。
Electricians use
DC testing tools to diagnose problems with electrical systems.
电工使用直流测试工具来诊断电气系统的故障。
A common method of converting AC to
DC is through the use of a rectifier.
将交流电转换为直流电的一种常见方法是使用整流器。
This has resulted in a total UHV DC transmission capacity of 130 million kW, laying a solid foundation for the establishment of a power network in East, North and central China, and helping ensure a secure and reliable power supply that supports the nation's transition in energy structure.
这使得特高压直流输电总容量达到1.3亿千瓦，为建立华东、华北和华中电网奠定了坚实的基础，并有助于确保安全可靠的电力供应，支持国家能源结构的转型。
According to CRRC Qingdao Sifang, the new trains will be powered by a 1500V DC overhead conductor rail system, which will increase energy efficiency over a typical 750V DC third rail system.
据中车青岛四方介绍，新列车将由1500V直流架空接触轨系统供电，这将比典型的750V直流第三轨系统提高能源效率。
State Grid said this is also the first time that a pumped-storage hydroelectric power plant was connected to a flexible DC network.
国家电网表示，这也是抽水蓄能水电站首次接入灵活的直流电网。
US District Judge Carl Nichols in Washington, DC, made the decision hours before the ban would take effect after Sunday midnight.
美国地区法官卡尔·尼科尔斯在华盛顿特区作出了这一决定，时间就在该禁令原定于周日午夜生效前几个小时。
"Its technology in flexible DC is the first trial in China Southern Power Grid's territory, and will further clean up the energy mix in the coastal Greater Bay Area," Wei said.
With its grid spanning 2,000 km from west to east and a total installed capacity of 310 gigawatts, China Southern Power Grid operates eight AC and 10 DC projects in the West-to-East Power Transmission Project, with a maximum transmission capacity of 50 GW.
The project, called Multi-terminal UHVDC Demonstration Project from Wudongde Power Station to Guangdong and Guangxi, or Kunbei-Liubei-Longmen DC Project for short, passes through Southwest China's Yunnan and Guizhou provinces, South China's Guangdong province and Guangxi Zhuang autonomous region.
The company supplies AC and DC charging stations, as well as the necessary software platforms to a range of customers that include EV manufacturers, EV charging network operators and real estate developers.
ABB has sold more than 11,000 DC fast-charging points across 76 countries worldwide.
Within China, ABB has been working with BYD and Daimler since 2016, supplying its DC Wallbox units for charging Denza electric vehicles.