概念信息
优选术语
创建: 2019-09-04T12:02:37
最后修改: 2022-01-19T11:18:24
定义
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In sedimentology and geology, a nodule is a small, irregularly rounded knot, mass, or lump of a mineral or mineral aggregate that typically has a contrasting composition, such as a pyrite nodule in coal, a chert nodule in limestone, or a phosphorite nodule in marine shale, from the enclosing sediment or sedimentary rock.
(en)
上位概念
- chemical sediments (en)
下位概念
- ferromanganese nodules (en)
- phosphorite nodules (en)
其他语言
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阿拉伯语
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德语
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法语
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书面挪威语
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土耳其语
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西班牙语
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中文
URI
http://aims.fao.org/aos/agrovoc/c_806bce3d
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