... 中央热水供应系统:centralized hot water supply system 中央热风供热系统:central warm air heating system 中央气体燃料供应:bulk gas supply ...
权威例句
1.
By sucking 55-degree heat out of the ground and concentrating it, the heat pump is able to deliver 110-degree heat into the warmair ducts of a centralheatingsystem.