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1·Marine manganese nodule containing a large amount of metallic cations is a natural catalyst.

由于矿物晶格中含有催化剂金属离子，大洋锰结核是天然的催化剂。

2·In addition, according to the crushing strength and physical, chemical properties of manganese nodule, the testing method for crushing using toothed roll crusher is established.

同时根据锰结核的破碎强度和物理化学特性确定了用齿辊破碎方式进行破碎的实验方法。

3·China is less sure of what it is after, but has become interested in the southern Indian Ocean, as well as the zone in the North Pacific where most of the manganese-nodule licences have been granted.

中国还不确定在寻找什么，但已对南印度洋感兴趣，还有北太平洋。大多数锰结核矿探矿证是在北太平洋。