closed feed water heater 密封给水加热器 ; 闭式给水加热器 ; 密闭给水加热
closed-feed water heater 闭式给水加热器
closed feed water system 闭式给水系统
semi-closed feed water system 半封闭式给水系统 ; 半闭式给水系统
closed feed-water heater 密闭给水加热器
closed feed water 密闭式给水 ; 密闭式供水
closed water feed 闭路供水
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