The Ancillary Services (as) are essential measures to guarantee the quality of electrical power in power system, which makes the system to operate safely and economically.

辅助服务是满足电力系统的安全经济运行，保证一定的电能质量的必要措施。

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A common distribution core that provides all electrical power, gases, chemicals, and other services to the sectors of an automated wafer processing system.

一种公共分配中心，向自动化晶片处理系统中的各个部分提供所有的电源、气体、化学原料和其它服务。

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Provide service for installation, maintenance services, can also according to user requirements corresponding to the supporting electrical equipment special different, solar power supply system.

提供预约上门安装、维护服务，还可以根据用户的要求对不同的、特殊的电器设备配套相应的太阳能供电系统。

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One substantial achievement, announced earlier this month, will make it much easier for Tribes to gain access to USDA funding for water and sewer improvement projects, electrical system upgrades and telecommunications services including broadband.

WHITEHOUSE: USDA Highlights Efforts to Give Tribes the Tools to Improve Basic Services | The White House

Ndow said his truckers currently use IdleAire, an electrical system trucks can plug into for cooling, heating, and other services like the Internet.

CNN: An eco-friendly way to cool big trucks