热水供给 meaning in English

hot water supply

Indirect hot water supply
间接热水供给
Relief valves and automatic gas shutoff devices for hot water supply systems ; addenda
热水供给系统的安全阀和气体自动关闭装置.补充件
Rubber seals - joint rings for pipelines for hot water supply , drainage and sewerage pipelines up to 110 c - specifications for the material
橡胶密封件.温度为110及以下的热水供给排水和污水管道用连接环.材料规范