对于调查区内富钴结壳形态总体上可分为三种类型：板状、砾状和结核状结壳。
The cobalt-rich crusts in the research area can be divided into three types according to the shape: plate, gravel-like and nodule-like crust.
研究结核状及砾状大洋富钴结壳浮选工艺。
The flotation technology of cored and gravel cobalt-rich crust from the Pacific Ocean is investigated.
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