经过某物的缩聚、脱水、中和制备碱的翻译：After something of polycondensation, dehydration, and in preparation of alkali 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

After something of condensation, dehydration, and in preparation of alkali

After something of polycondensation, dehydration, and in preparation of alkali

After something condensation, dehydration, neutral preparation alkali

After a certain property of polyphosphate, dehydration, and prepared in alkali

After something of polycondensation, dehydration, and in preparation of alkali