然而,很多海洋生物的骨骼由一种叫作霰石的碳酸钙矿物变体组成。
The fossils buried in Pleistocene and earlier ocean sediments were of foraminifera'u2014small, single-celled marine organisms that secrete shells of calcium carbonate, or calcite.在更新世和更早的海洋沉积物中埋藏的化石生物属于孔虫类生物,它们是微小的单细胞海洋生物,其分泌的硬壳由碳酸钙和方解石组成。
So, there's 1 mole of calcium carbonate.这儿有1摩尔的碳酸钙产生。
Inside, lime bonds with the carbon dioxide to form solid calcium carbonate.在内部石灰与二氧化碳结合生成碳酸钙固体。
The acid water in coal pit can be well controlled by adding calcium carbonate and lime.阐述通过添加碳酸钙和石灰,可使酸性采煤坑水得到很好治理。