closed system [自] 封闭系统 ; 密闭系统 ; 闭系统 ; 闭合系
closed-system trap 封闭型圈闭
symmetric closed system 对称封闭系统
closed system of pipes 管路封闭系统
closed system closed loop 闭路循环
closed system separator 闭路循环选矿机
Semi Closed System 半闭式系统
closed system model 封闭系统模式 ; 封闭系统模型
closed system of ventilation 封闭式通风系统
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