查询词典 carbonate acid

For this study, calcium carbonate was chosen because it is relatively insoluble in water and easily dissolved in dilute acid or ammonium chloride.

在本研究中选用了碳酸钙，因为它相对不溶于水，且易溶解于稀酸或氯化铵。

Barium carbonate crystal with fiber structure was prepared from malonic acid.

以丙二酸做为调控剂，得到纤维状的碳酸钡晶体。

The experimental results show that, by the process, 10 kg barium carbonate with 0.1 L hydrochloric acid (HCl 27%) as catalyst is added in 1 m3 copper electrolyte, 70% Bi can be removed from the electrolyte, and the Bi content in filter residue is more than 4%.

实验结果表明，采用碳酸钡脱铋新工艺， 1 m3铜电解液加入10 kg碳酸钡，用0.1 L盐酸(HCl 27%)作催化剂， Bi的脱除率可达70%，脱铋渣含Bi量大于4%。

However, a drug known as Gaviscon , containing magnesium carbonate and alginic acid derived from bladderwrack, has been shown helpful for heartburn in a double-blind trial.

然而，药物称为Gaviscon ，含有碳酸镁和海藻酸来自bladderwrack ，已被证明有助于灼热的双盲试验。

The effect of several factors on calcium carbonate inhibitionbehavior of polyaspartic acid is discussed in this paper.

结果表明：在低投加量的情况下，分子量为4000的聚天冬氨酸具有最为优良的阻垢性能。

Generally refers to a limestone cave by the dissolution of calcareous components of carbonate-containing groundwater, due to temperature and pressure changes in environmental conditions, so that carbolic acid calcium to re-condense out to form a bell emulsion, cylindrical coagulation.

泛指石灰岩溶洞中由溶解有石灰质组分的含碳酸地下水，因温度、压力环境条件的变化，使石炭酸钙重新凝结出来，形成的钟乳状、圆柱状凝结物。

It has been proven to be effective for acid diversion in carbonate formations.

为此，开展了水基泡沫转向技术的研究，较好地解决了上述问题。

According to the analysis of chemical composition, the composition of urinary stones are calcium oxalate, calcium phosphate, calcium carbonate, uric acid and cystine, the most common is calcium oxalate stones, particularly account for 80%.

根据化学成分的分析，尿路结石的成分有草酸钙、磷酸钙、碳酸钙、尿酸、胱胺酸等，尤以草酸钙结石最常见，约占80%。

Its steps include these:(1) purification of WPA;(2) neutralization reaction between purified WPA and sodium carbonate for the salt mixture of disodium hydrogen phosphate and monometallic sodium orthophosphate;(3) adjustment of the mixture's neutralizing degree with additive acid or alkali;(4) quick separation of crystal with additive organic solvent under continue stir;(5) polymerization of crystal under the high temperature for the high quality product of STPP.

其步骤为：(1)湿法磷酸净化；(2)净化后的磷酸与碳酸钠中和反应生成磷酸一氢钠和磷酸二氢钠混合盐溶液；(3)用酸、碱调节确定该混合盐溶液的中和度；(4)加入有机溶剂，通过不断地搅拌使晶体快速析出；(5)晶体经高温聚合，生成高品质的三聚磷酸钠。

Fluosilicic acid,which is the byproduct from phosphate fertilizer factory,reacts with ammonium hydrocarbonate to obtain ammonium fluosilicate,then reacts with ammonium carbonate to form settled SiO 2,after filtration,water washing,drying and calcining,high purity SiO 2 with less than 10×10 -6 metal impurity and less than 10×10 -9 uranium and thorium respectively is made.

由磷肥厂副产氟硅酸同碳铵反应得氟硅酸铵，再和碳铵反应生成SiO2 沉淀，经过滤、水洗、干燥、煅烧得高纯SiO2 ，其金属杂质总含量小于 10× 10 -6，含放射性元素铀和钍各小于 10× 10 -9，通过实验获得了适宜的工艺条件，反应温度 70℃～ 80℃，反应时间 1 5h～ 2 0h ，配料比n(NH4HCO3 )∶n(NH4 2 SiF6 =4 4。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。