Water, containing dissolved calcium hydrogen carbonate, 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。

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Gypsum, ammonium hydrogen carbonate 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。

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Formed as a sublimate (mixed with ammonium hydrogen carbonate) when calcium carbonate and ammonium sulfate (or chloride) are heated together.

当碳酸钙与硫酸铵(或氯化铵)一起加热时，生成的升华物(与碳酸氢铵混合)。

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