prehydration是什么意思

用法例句

Research on properties of concrete with pre-hydrated fly ash and grounded furnace slag;

磨细矿粉和预水化粉煤灰在混凝土中的应用

Method\ Predehydration process of high pour-point is performed by using effective chemical predehydrating.

方法　应用高效化学预脱水剂 ,实施高凝油预脱水工艺。