[化] 亚乙基过氧; 亚乙基过氧化物

[单词解析速记].JV447.(Yoke.and.Vapid)

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[单词解析速记].JV517.(Vivid.and.Inane)

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By counting back through these layers and measuring the amount of lead in each, he could work out global lead concentrations at any time for hundreds, or even thousands, of years. The notion became the foundation of ice core studies, on which much mo

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Lead is a neurotoxin. Get too much of it and you can irreparably damage the brain and central nervous system. Among the many symptoms associated with overexposure are blindness, insomnia, kidney failure, hearing loss, cancer, palsies, and convulsions

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