查询词典 calcium carbonate

The causes and mechanisms of fouling are studied based upon the field investigation and laboratory analysis,which show that the major components of the fouling are calcium and magnesium carbonates with calcium carbonate in large percentage.

结果表明污垢的主要成分为钙和镁的碳酸盐，其中主要是碳酸钙。

Manual: The health food is made from the raw materials of calcium carbonate、nicotinic acid、calcium pantothenate、vitamineB6、vitamineB1、vitamineB12、、vitamineB2、 folic acid、saccharose powder、starch、carboxymethyl starch natrium and stearic acid magnesium.

说明书：本品是以碳酸钙、烟酸、泛酸钙、维生素B6、维生素B1、维生素B2、叶酸、维生素B12、蔗糖粉、淀粉、羧甲基淀粉钠、硬脂酸镁为主要原料制成的保健食品，具有补充B族维生素的保健功能。

Thermal decomposition reaction kinetics of potash feldspar -calcium sulphate-calcium carbonate system added to sodium sulphate and sodium chloride was studied.

研究了钾长石-硫酸钙-碳酸钙体系加入硫酸钠、氯化钠的热分解反应动力学，结果表明硫酸钠可以有效促进钾长石的热分解。

Tufa form when underwater springs rich in calcium meet lake water rich in carbonates, forming calcium carbonate, or limestone.

当富含钙质的地下水接触到富含碳酸盐的湖水时，就形成了碳酸钙或者花岗岩，进而形成石笋。

The powder of cement was composed of calcium carbonate, tricalcium phosphate and calcium phosphate dibasic.

再以磷酸氢二钠和磷酸二氢钠合成浓度为0.2 mol/L的磷酸钠缓冲液，作为固化液。

The powder of cement was composed of calcium carbonate, tricalcium phosphate and calcium phosphate dibasic.

碳酸化羟基磷灰石骨水泥的开发与多孔化研究版权属于原作者所有！

Method］(1)A new type of carbonated hydroxyapatite cementwas prepared. The powder of cement was composed of calcium carbonate, tricalcium phosphate and calcium phosphate dibasic.

［目的］应用无机化学材料合成碳酸化羟基磷灰石骨水泥，并通过发泡成孔的新方法制备能原位固化形成多孔结构的无机植骨材料。

Pot experiment was used to study the effects of four amendments (calcium-magnesium phosphate, sepiolite, calcium carbonate and organic manure) on the growth and heavy metal accumulation characters of Juncus effuses grown on the soil contaminated by lead/zinc mine tailings .

通过盆栽试验研究了铅锌尾矿污染土壤上施用钙镁磷肥、海泡石、碳酸钙和有机肥等4种改良剂对灯心草生长发育和产量以及重金属元素Cu、Cd、Pb、Zn积累特性的影响，并分析了施用改良剂后土壤pH值和土壤中有效态重金属含量的变化。

The results indicate that PESA has excellent inhibitive effects to the poor solubility scales such as barium sulfate, calcium sulfate, strontium sulfate and to the calcium carbonate scale is normal.

研究了PESA在油田用水中的阻垢效果，结果表明，PESA对常遇到的硫酸钡、硫酸锶、硫酸钙类难溶垢有着优异的阻垢效果，对碳酸钙也有较好效果。

When the underground water percolates through a soluble rock sequence along its fissure it will dissolve large amount of calcium carbonates and seep out from the sidewalls and the roof. Due to the changes in temperature and pressure, water evaporated and carbon dioxide escaped and the dissolved calcium carbonate in the water precipitated in various forms.

地下水沿着可溶性岩石和裂隙渗透，溶解了岩石中的较多的碳酸钙，通过洞顶或洞壁滴流出来，因为温度、压力的改变，水的蒸发，二氧化碳散失，使溶解在水中的碳酸钙沉淀下来形成各种形态。

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。