蛋壳的矿物质几乎为纯碳酸钙，还有一些镁，形成放射状结晶。
The mineral of the shell is almost pure calcium carbonate, with some magnesium, formed of radiating crystals.
在循环冷却水系统中，最常见的难溶盐或微溶盐有碳酸钙、硫酸钙、磷酸锌及硅酸镁等。
In the cooling water system, the most common scale is carbonate, sulphate, phosphate, silicate.
该工艺将矿石通过煅烧、分离、碳化、焙烧等过程，加工成镁、碳酸钙和复合肥。
This technology changes the ore into magnesium, calcium carbonate and compound fertilizer through calcination, separation, carbonization and roasting.
花梨山矿区白云岩是以白云石为主的碳酸盐岩，是碳酸钙和碳酸镁的复盐岩石。
The dolomite of Hualishan ore area is carbonate that composed by dolomite, it is the composite salt rock of calcium carbonate and magnesium carbonate.
经过垢样分析，结垢主要为碳酸钙、少量铁垢及碳酸镁垢。
Scale analysis indicates that the scale mostly consists of calcium carbonate, a little of iron scale and magnesium carbonate.
民众抱怨水壶产生结垢，系硬水煮沸时其溶解性钙及镁形成碳酸钙及碳酸镁沉淀物所造成。
When people complain about scaling inside their water kettles, this is caused by dissolved calcium and magnesium ions forming calcium and magnesium carbonate deposits when hard water is boiled.
添加剂选自碳酸镁、碳酸钙、氢氧化镁、氢氧化钙和其混合物。
The additive is selected magnesium carbonate, calcium carbonate, magnesium hydroxide, calcium hydroxide, and mixtures thereof.
添加剂选自碳酸镁、碳酸钙、氢氧化镁、氢氧化钙和其混合物。
The additive is selected magnesium carbonate, calcium carbonate, magnesium hydroxide, calcium hydroxide, and mixtures thereof.
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