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Preferred term

 

Definition

  • 自然的、像石头的、棕色或黑色的森林植物原料的衍生物,通常在泥炭层积累、逐渐被压缩和硬化直到最终变成石墨状结构的材料。

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URI

http://www.eionet.europa.eu/gemet/concept/1500

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