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单词 manganese nodule
释义

manganese nodule


manganese nodule

n (Geological Science) geology a small irregular concretion found on deep ocean floors having high concentrations of certain metals, esp manganese

manganese nodule


manganese nodule

[′maŋ·gə‚nēs ′naj·ül] (geology) Small, irregular black to brown concretions consisting chiefly of manganese salts and manganese oxide minerals; formed in oceans as a result of pelagic sedimentation or precipitation.
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