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氢气回收
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氢气回收
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石油炼制过程
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hydrogen recovery
氢气回收
回收工厂排放的副产氢气,制成较纯的高浓度氢气供工厂循环使用的过程。氢气在炼油厂生产总成本中占有重要比例,氢耗对炼油厂的利润收益有很大的影响。
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environmental state recognition
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environmental supervision and management on environmental construction projects
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Environmental Sustainability Index
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environmental systems engineering
Environmental Systems Research Institute, Inc.
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