The action of calcium as a protective agent against inimical ions is not a highly specific function . 钙作为一种保护剂以抗御有害离子的作用，并不表现高度的特效性功能。
The mineral of the shell is almost pure calcium carbonate, with some magnesium, formed of radiating crystals . 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。
It would appear that the inputs are insufficient to offset the mobilization and leaching of calcium from the topsoil . 钙的转入量看来不足以补偿从表土中活化和淋失的钙。
The carbonate from calcium carbonate, if not removed by calcining may cause foaming in the reactors . 碳酸钙中存在的碳酸根，如果不经煅烧除去，会在反应槽中引起泡沫生成。
In order to calcine calcium carbonate fines, the technique of high-temperature pelletization has successfully been used . 为了煅烧碳酸钙细粉，已经成功地应用了高温成球技术。
The development of sodium absorption capacity by aging beet slices, however, does not require calcium . 然而，随着甜菜薄片的衰老，要提高钠离子的吸收能力，已经无需钙参与作用了。
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。
Iron ores - methods for determination of calcium content 铁矿石.钙含量的测定方法
Study on surface modification of ground calcium carbonate 重质碳酸钙表面改性研究
Milk is the major source of calcium for babies 牛奶是婴儿获取钙质的主要来源。
