... 书页构造：book structure 瘦粘土：lean clay 瘦土：infertile soil ...
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... leaf type contract薄板型接触 lean clay贫黏土 leather-hard半干 ...
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... Leakage current 泄漏电流 Lean clay 低塑性黏土 Levee 堤岸 ...
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·2,447,543篇论文数据，部分数据来源于NoteExpress
In the lean coal bed and anthracite bed of high coal rank, the main composition of the clay mineral in the tonstein intercalations is illinite, Kaolinite takes second place.
在高变质阶段的贫煤、无烟煤层中，煤层夹矸的粘土矿物成分以伊利石为主，高岭石次之。
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