查询词典 calcium carbonate

The result of the experiment enunciation, the calcium carbide residue can be used to make the nanosized calcium carbonate.

实验结果表明，电石渣经过适当处理可以作为钙质原料用以制备纳米碳酸钙。

It occurs as calcium carbonate in coral and is considered to be the best source of vegetarian calcium.

它发生碳酸钙在珊瑚和被认为是最好的来源，素食的钙。

Calcium carbonate is the cheapest and most commonly used compounds, its high calcium content, or about 40%.

碳酸钙是最便宜，最常用的化合物，钙含量高，约占40％。

Therefore the preparation of light calcium carbonate, which has a big market demand, will become a good approach of the comprehensive treatments of calcium carbide residue.

因此利用电石渣生产市场需求量大的轻质碳酸钙，无疑是电石渣综合治理很好的途径。

Principal components :Calcium carbonate,calcium oxide,silicate,cement and additives.

主要成分：碳酸钙、氧化钙、硅酸盐水泥和添加剂。

Composed of, containing, or characteristic of calcium carbonate, calcium, or limestone; chalky .

碳酸钙的由碳酸钙、钙或石灰石组成的、包含此类物质的或具有其性质的；白垩的

It is shown that calcium carbonate can be decomposed in aqueous sodium dichromate solution and transformed to calcium chromate at ambient pressure and boiling temperature.

介绍了一种制取铬酸钙的新方法，利用重铬酸钠溶液分解碳酸钙，可以得到高纯度的铬酸钙。

Ordosica community. Those changes accelerated decomposition of A. ordosica litter and soil transpiration, promoted the release of calcium ion and carbon dioxide, thus enhanced the eluviation and precipitation of calcium carbonate in soil of A. ordosica community.

这些变化促进了油蒿枯枝落叶的分解，加速了Ca(上标 2+)的释放，促进了土壤呼吸，促进了土壤中CO2的释放，进而促进了油蒿群落土壤中CaCO3的淋溶和淀积。

In general as long as the temperature reaches 90 ℃, the common E. coli, hepatitis B virus and other bacteria have already perished, but we still continue to boil water, this area is to allow water in the calcium carbonate, magnesium carbonate and other ingredients to fully precipitate impurities, and the other On the one hand, because I am using tap water is treated with chlorine, so a certain degree of residual chlorine in water, in the process of boiling water, chlorine and impurities in the water will generate harmful substances called chloroform.

在一般的长期的温度达90℃，普通大肠杆菌，乙型肝炎病毒和其他细菌已经死亡，但我们仍烧开水，这方面是允许的碳酸钙，碳酸镁和其他水成分，杂质充分沉淀，以及对其他一方面，因为我使用的自来水是用氯处理，因此在水中的余氯，在一定程度上开水，氯和水中杂质的过程中，将生成所谓有害物质氯仿。

In order to solve the problem of accumulation of phosphogypsum, which is a byproduct in the process of nitrophosphate production by freezing method, using phosphogypsum, ammonium carbonate and ammonia as raw materials, ammonium sulfate and calcium carbonate were prepared by double decomposition reaction, and the recycling utilization of sulfur resource was realized.

为了解决冷冻法硝酸磷肥生产中深度除钙副产磷石膏的堆积问题，以磷石膏、碳酸铵和氨水为原料进行复分解反应制备硫酸铵和碳酸钙，以实现硫资源的循环利用。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。