The explanation may be in Earth's mantle, the layer of rock underlying the tectonic plates and extending down over 1,800 miles to the outer edge of Earth's iron core.

解释可能是在地球的地幔中，这是在构造板块下面的岩石层，向下延伸超过1800英里到地球铁芯的外边缘。

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The mechanism and cause of edge cracking defect of hot-rolled strip in Kunming Iron & Steel co.

对昆钢热轧板卷边裂缺陷机理及成因进行了研究分析，提出了相应的预防控制措施，取得了较好的效果。

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The Damiao iron deposit is located at the southern margin of the Damiao plagioclase rock body and northern side of the southern edge of Hongshila-Damiao deep fault.

河北承德大庙黑山铁矿床位于大庙斜长岩体南部边缘，红石砬—大庙深断裂附近北侧。

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Archaeologists said one of the most notable burials was a grave that contained the skeletons of two individuals which were closely flexed together, and the discovery of a number of iron nails around the edge of two of the graves, suggesting the bodies were buried inside coffins.

BBC: Archaeological dig uncovers Roman activity near Stroud