常见例句雙語例句The individual heating system with gas-fired hot water heater and the heating system with gas-fired hot water boiler are introduced.介紹了燃氣熱水爐單戶供煖系統和燃氣熱水鍋爐供煖系統，分析了供煖系統的調節方式。 返回 gas hot-water heater