碳酸

This thesis studied on the preparation,charac- terization and capability of nanosized zinc carbo- nate and zinc oxide.

本论文研究纳米碳酸锌和纳米氧化锌的制备、表征和性能。

This is probably due to the geometry of the intermediate. 3. The cyclization of carbodiimide 2 with 1H-1, 2, 4-triazole in presence of solid potassium carbonate was studied firstly. The interesting color change was observed during the reaction process. The condition for cyclization was researched.

首次研究了碳二亚胺2与1H-1，2，4-三唑在固体碳酸钾存在下的成环反应，结果表明该反应仅生成1-N产物，而且在反应过程中出现了有趣的颜色变化，研究了该成环反应的条件。

The main diagenetic change of quartz in research section is secondary growth and corrosion; the main diagenetic change of feldspar is secondary growth, clay mineralization, carbonatation and dissolution.

研究区段石英的主要成岩变化为次生加大和溶蚀；长石的主要成岩变化为次生加大、粘土矿化、碳酸盐化和溶解。

This may be done by periodically pumping the beer through a carbonator or bubbling carbon dioxide into the storage tank.

这可以通过定期输送啤酒流经碳酸化器或者通过向储罐内充入二氧化碳来完成。

In the recovery of copper and zinc, etc. from waste hydrochloric acid by zinc powder replacement, zinc chlorinate liquor is obtained.

研究了在废盐酸溶液中用锌粉置换回收铜、铅等金属得到的氯化锌溶液，采用两步调碱和磁场作用制备碱式碳酸锌。

Differing from the ancient and modern known palaeochannel-type exogenetic-epigenetic uranium deposits, Malinov uranium deposit has developed strong chloritization for several times.

俄罗斯马林诺夫铀矿床与已知古代和现代的古河道型外生后生铀矿床不同，它强烈发育不止一次的绿泥石化，且局部出现硫化物-硒化物化和碳酸盐化，古层间-潜水氧化发育的可靠标志表现弱。

The preparation of phenyl chloroformate and chloroformic acid l,3-thiazole-5-ylmethyl ester with biscarbonate was studied.

然后研究了双碳酸酯在合成氯甲酸苯酯和氯甲酸-1，3-噻唑基-5-甲酯的应用。

The preparation of phenyl chloroformate and chloroformic acidl,3-thiazole-5-ylmethyl ester with biscarbonate was studied.

然后研究了双碳酸酯在合成氯甲酸苯酯和氯甲酸-1，3-噻唑基-5-甲酯的应用。

The chemical structure of the product was characterized by means of the melting point and IR. The results show that tetraethylammonium bromide which was used as a phase transfer catalyst in this reaction had optimization effect on the interfacial diffusive reaction of BTC and PNP. Higher concentration of sodium hydroxide, lower temperature and a higher dosage of BTC produced a small amount of 4-nitrophenyl chloroformate, while lower concentration of sodium hydroxide and a lower dosage of BTC made reaction incomplete, which affected the yield.

结果表明，在碳酸二（4-硝基苯基）酯合成中使用的相转移催化剂四乙基溴化铵对受界面扩散控制的BTC气与对硝基酚钠反应有良好的相转移催化效果；氢氧化钠质量分数较低时，酚钠盐向溶有BTC的油相扩散速度较小，较高时会产生氯甲酸对硝基苯酯；温度较低、BTC量较高时，会产生少量氯甲酸对硝基苯酯，BTC用量较低会使反应不完全，这些都影响着收率。

Results: Total 57 operations were performed in 57 patients including 54 cases with chyluria on one side and 3 bilateral.

结果：57例患者中有3例(5.3%)出现术中并发症，包括血管损伤，误夹肾血管和严重高碳酸血症各1例，均在术中给予相应处理，未中转开放。

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。