iron-manganese concretions 铁锰结核
irregular lime concretions [土壤] 砂礓
concretions and aggregations 症癖
concretions and conglomerations 症瘕
lime concretions [土壤] 石灰结核
同义词: calculus
以上来源于: WordNet
N the act or process of coming or growing together; coalescence 会合; 结合
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