弱碱在水中部份电离，放出氢氧离子。
Weak alkalis ionize partly ( ionize ) in water to give hydroxide ion.
游离的氢氧离子会进一步和硅氧网路反应。
The free hydroxyl ion is involved in a further reaction with the silica network.
在长期海水侵蚀下，掺粉煤灰混凝土的氢氧离子扩散系数的氯离子扩散系数亦均远小于基准混凝土。
On the condition of long time seawater corrosion, the hydroxide ion diffusion coefficient and the chlorion diffusion coefficient of fly ash concrete are far smaller than th...
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