英语语法分析

The strontium recovery in producing metallic strontium using vacuum aluminothermic reduction was investigated.

为提高锶还原率，研究了真空铝热还原法制备金属锶的反应机理。

To improve the strontium recovery ratio the reaction mechanism in preparation of Sr using vacuum aluminothermic reduction was studied.

为提高锶还原率，研究了真空铝热还原法制备金属锶的反应机理。

Expound magnesium metallurgy with ferrosilicon process and calcium metallurgy with aluminothermic process by contracting technological conditions.

通过工艺条件对比分析，阐明了硅热法炼镁与铝热法炼钙两者工艺过程、设备条件基本相同。