... operating period,工作周期 operating pressure differential,工作压差 operating system (OS),操作 铂铑热电偶价格 系统 ...
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maximum operating pressure differential 最大工作压差
operating differential pressure 工作压差
Operating differential pressure range 工作压差范围
Self-operating differential pressure control valve 采暖空调用自力式压差控制阀
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