mains supply

基本解释

The primary power supply is powered from the mains supply and energizes a lumped coil;
主要的电力供给是来自市电电源并通过一个集合线圈激发；
In areas where there are water scarcity issues, if we can take our factories off the mains supply, then that means there is more water available for the local community.
在水资源匮乏的地区,如果我们的工厂可以不再依赖供水管道,那么当地社区获得的供应就会更多.
Engineers behind the project say they hope to be able to run entire factories using extracted potato water, meaning they can be unplugged entirely from the mains supply.
负责这个项目的工程师表示他们希望能够用从土豆中榨取的水分来运作所有的工厂，这意味着可以全部的供水管道都不有用武之地。