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商用熱水
Commercial hot water
商用采暖
Commercial heating
集中采暖
Centralized heating
泳池恒溫
Swimming pool
農(nóng)業(yè)烘干
Agricultural drying
工業(yè)烘干
Industrial drying
養(yǎng)殖恒溫
Constant temperature culture
熱水BOT
Hot water BOT