【机械工程】进料除气器，蒸汽冷凝器

feed-water heater (feed-water preheater) air preheater

卡片面朝下馈送\nface-down feed【计】

feed-water heater

exhaust steam preheater, waste gas feed heater

fresh feed pump

coin-feed televisor

envelop manual feed

preheating feed-water by mixing with steam