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Based on the characteristics of biomass fuel, this article summarizes the sources of alkali metals in biomass and the elutriation and migration.

摘要在明确了燃料特点的基础上，对中碱金属元素的析出迁移规律进行了概述。

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经济学人-科技

It took decades to tease out the truth of Debereiner's conjecture, and thus to construct the periodic table-in which the alkali metals form the first column.

科学家Debereiner猜想的正确性用十年的时间，也因此元素周期表——碱金属组成第一族。

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3G, 401(K), a,
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