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词汇 buna
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buna n.

synthetic rubber made from butadiene, 1936, from German Buna, a name chosen by the German Dye Trust, from first elements of butadiene, name of a hydrocarbon (related to butane; the suffix indicates the presence of two double bonds) + Na, indicating sodium (from natrium; see sodium).

updated on October 13, 2017

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更新时间:2025/5/2 7:33:13