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【Daily Topic】【HVAC Version 20170107】

2017-01-09View Original

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This post was last edited by yuchenchf on 2017-1-19 at 10:49. Reward for participation: 2 wealth points. Correct reward: 9 Wealth. Fill in the blank: The purification principle of air negative ions relies on ( ), which allows them to attach to solid or liquid pollutant particles, thereby forming larger ions that settle down. Coagulation and adsorption

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