Water, containing dissolved calciumhydrogencarbonate, passes through the limestone and drops evaporate on the stalactite, increasing its length with a deposit of calcium carbonate.
含有溶解碳酸氢钙的水通过石灰石滴在钟乳石上蒸发，随着碳酸钙沉积物的增加不断增加着它的长度。
2
Gypsum, ammonium hydrogencarbonate and potassium chloride were used as raw materials in this research, to produce potassium sulfate, potassium ammonium chloride and calcium carbonate.
以石膏、碳酸氢铵和氯化钾为原料，生产硫酸钾、氯化铵钾和碳酸钙，原料综合利用充分，经济效益好。
3
Formed as a sublimate (mixed with ammonium hydrogencarbonate) when calcium carbonate and ammonium sulfate (or chloride) are heated together.