求翻译：硫酸钠对粉煤灰活性的激发主要是SO42-，在Ca2+的作用下，与溶解于液相的活性A12O3反应生成水化硫铝酸钙AFt，即钙矾石。是什么意思？

Sodium sulfate to stimulate the activity of fly ash is mainly SO42-, in the role of Ca2 +, and dissolved in the liquid phase reaction of hydration of the active A12O3 sulphoaluminate AFt, that ettringite.

Sodium sulfate to the pulverized fuel ash SO mainly reactive inspired by Ca 42 - in the role of 2+ and dissolves in the liquid phase, the reactive A O 12 3 reactions that produce carbohydrates you eat sulfur aluminum calcium propionate, i.e. calcium AFt aluminite.

The sodium sulfate to the pulverized coal ash active stimulation mainly is SO42-, under Ca2+ function, with dissolution in liquid phase active A12O3 response production hydration calcium sulphoaluminate AFt, namely ettringite.

Stimulation of sodium sulfate on fly ash is mainly SO42-, under the effect of Ca2+, A12O3 and dissolved in the liquid phase of activity to produce hydrated calcium sulphoaluminate AFt, ettringite.

Stimulation of sodium sulfate on fly ash is mainly SO42-, under the effect of Ca2+, A12O3 and dissolved in the liquid phase of activity to produce hydrated calcium sulphoaluminate AFt, ettringite.