The mineral of the shell is almost pure calcium carbonate, with some magnesium, formed of radiating crystals.
蛋壳的矿物质几乎为纯碳酸钙，还有一些镁，形成放射状结晶。
Nitrogen is inert except when heated to very high temperatures where it combines with some of the more active metals, such as lithium and magnesium, to form nitrides.
一般情况下，氮是不活泼的的。当加热到非常高的温度时它会同更加活泼的金属，如锂和镁反应生成氮化物。
Therefore, it is pressing to develop some new heat resistant magnesium alloys with low cost.
因此，开发新型低成本高温镁合金是近年来的研究热点。
应用推荐