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空气分离设备 产品型号编制方法
Air separation plant——Methods for compiling product models
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空气分离设备流程图.图形符号和文字代号
Flow chart of air separation plant.Graphical symbols and letter codes
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铝制空气分离设备氩弧焊工艺规程及焊接工艺评定
Argon shielded arc welding procedure specifications and welding procedure qualifications for air separation plants constructed of aluminium alloys
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气体分析 标准混合气 混合物制备证书
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焊接用混合气体 氩-二氧化碳
Mixed gas for welding Argon-Carbon dioxide
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灯泡用氩气
Argon for glow lamp
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空气分离设备用切换蝶阀
Switching butterfly valves for air separation plants
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空气分离设备表面清洁度
Surface cleanliness of air separation plants
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低压透平膨胀机基本系列参数
Low pressure turboexpanders--Series of basic parameter
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