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The compositions of phyllosilicate and iron oxides for several main types of soils and their corresponding iron-manganese nodules were studied by the means of XRD.

以我国几种常见壤及壤铁锰结核为试验料，用X-射线衍射，研壤和铁锰结核中层状硅酸盐和氧化铁的类型组合。

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声明：以上例句、词性分类均由互联网资源自动生成，部分未经过人工审核，其表达内容亦不代表本软件的观点；若发现问题，欢迎向我们指正。

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These lumpy rocks are known as manganese nodules, and they grow in underwater fields more than 3500 meters below the surface.

这些块状岩石被结核，它们生长在地表以下 3500 多米水下。

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The Hughes-Global Marine venture would be the development of equipment that could gather nodules of manganese and other minerals that accumulated around sediment on the ocean floor.

Hughes-Global Marine 合资企业将开发可以收集在海底沉积物周围堆积结核和其他矿物质。

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