The magnesium-lanthanum cerium interalloy is prepared by 80% by mass of magnesium ingot and 20% by weight of lanthanum-cerium rare earth compound;

所述的镁-镧铈中间合金是由配比为质量为80％ 的镁锭与质量为20％的镧铈混合稀土制成；

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One company exploits this phenomenon by making nanoparticles of the compound cerium oxide, which in that form are chemically reactive enough to serve as a catalyst.

ECONOMIST: Small wonders