碳酸

A salt or ester of hypochlorous acid.To change into a carbonate.may I take your beverage order ?

茶饮料将在中国掀起第三次饮料浪潮，与碳酸饮料争夺饮料市场的霸主宝座。

Objective To study the effects of permissive hypercapnia in LC operations on hemodynamics, intrapulmonary shunt and oxygenation.

目的探讨腹腔镜胆囊切除术中容许性高碳酸血症对病人血流动力学、肺内分流和氧合的影响。

Study on different methods of iodomethane s preparation;2. The carbonyl group of DMC is formed by CO_2 insertion, and the two methyl groups of DMC are from methanol and iodomethane , respectively.

结果表明，固体碱碳酸钾催化剂直接参与了DMC的合成过程，DMC分子中的羰基由CO2插入甲醇后形成，两个甲基分别来源于甲醇和碘甲烷。

Thus,α,β-unsaturated ketones were prepared by base-catalized aldol condensation between substituted arylaldehydes and acetones. Using iodosobenzene diacetate as oxidants, the resulting α,β-unsaturated ketones will be transformed to β,γ-unsaturated carboxylic acid esters.

以不同取代的芳香醛跟丙酮缩合后可以得到α，β-不饱和酮，再用iodosobenzene diacetate做氧化剂氧化，可以成左卤o到β，γ-不饱和碳酸酯类化合物。

Keywords: methyl carbamate, isocyanic acid ester, polyurethane, green chemical technology, dimethyl carbonate

中文关键词：氨基甲酸甲酯；异氰酸酯；聚氨酯；绿色化工；碳酸二甲酯

This project mainly exploratorily studied that polyurethane was produced via condensation reaction between polyhydroxylated compounds and methyl carbamate, which was firstly synthesized by dimethyl carbonate and amines. The process is a green route because it turns away the synthesis and the utilization of toxical isocyanic acid ester.

本项目主要探索性地研究了碳酸二甲酯和胺类化合物反应生成氨基甲酸甲酯，然后氨基甲酸甲酯再和多羟基化合物直接反应得到聚氨酯材料，从而避免了异氰酸酯的合成和使用。

Octadecatrienoic-acid, with the content of 45.90%, was presented to be the predominant compound. The content of 9, 12-octadecadienoic acid and linolic acid was 20.75% and 19.56% respectively.

结果表明，香蕉皮脂肪酸中十六碳酸的含量最高，为45.90%，2种必需脂肪酸a-亚麻酸(Z，Z，Z-9， 12， 15-octadecatrienoic acid和亚油酸(Z，Z-9， 12-octadecadienoic acid的含量分别为20.75%和19.56%。

Xiuyu formed in magnesian carbonate rocks in metamorphic marble, China's such a lot of jade kinds of deposits.

岫玉形成于镁质碳酸岩的变质大理石中，我国这种玉种的矿床很多。

The fourteen complexes of mandelic acid with rare earth elements in aqueous solution have been prepared.

在水溶液体系中，用苯羟乙酸直接与碳酸稀土作用，合成了十四种苯羟乙酸稀土配合物。

It can be divided into four methods to prepare manganic manganous oxide from the raw stuff: electrolytic product of manganese、manganous salt、manganese oxide compound and manganese carbonate.

四氧化三锰的生产方法主要有四种：金属锰悬浮液法、锰盐法、高价锰氧化物法以及碳酸锰法。

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。