This paper investigates improving corrosion resistance of AZ91 magnesium alloy surface by permeating rare earths.

研究了采用稀土多元共渗方法提高AZ91 镁合金表面耐腐蚀性能的作用。

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This week's ruling applies to materials like bauxite, coke, magnesium, manganese and zinc, but, most notably, does not apply to rare earths -- a group of 17 elements critical to the production of tablets, smartphones and myriad other gadgets.

ENGADGET: WTO ruling revives debate over China's rare earths trade