二氧化锰

And the structure and appearance of MnO2 were characterized using various techniques such as chemical analysis, scanning electron microscopy and X-ray diffraction, and the electrochemical performance of MnO2 was discussed using kinds of measurements such as cyclic voltammetry, constant charging/discharging and local action testing method.

采用化学分析、扫描电镜、X射线衍射等实验手段分析二氧化锰的组织结构和形貌，采用循环伏安、恒流充放电及自放电等测试方法分析二氧化锰的电化学性能。

The specific capacitance of the ACNT electrode was calculated at 16F/g before the MnO2 film modification, and then it increased to 330 F/g after the MnO2 film deposition due to the special Faradic capacitance of MnO2 With scaning for 200 cycles, there's a litter change for its cyclic voltammogram curve, indicating the good reversible and capacitive property for the MnO2-ACNTs composite.

直立碳纳米管电极的比电容为16 F/g，在碳纳米管表面沉积上二氧化锰修饰层后，此复合材料电极的比电容增大至330 F/g，比电容量大幅提升近20倍。同时扫描200圈后，直立碳纳米管与二氧化锰复合材料的循环伏安曲线变化很小，说明其具有相当好的循环寿命和电容稳定性能。

There is the first production line of alkali manganese grade EMD without hydrargyrum of China. The line was identified typical program of national high technology, and alkali manganese grade EMD without hydrargyrum was identified national key new product by related national ministries?.

公司拥有我国第一条无汞碱锰电解二氧化锰产线，该生产线被评为国家高技水产业化示范工程，无汞碱锰电解二氧锰被国家科技部、国家税务总局、对外贸易部、国家质量技术监督局和国家环保总局共同认定为"国家重点新产品"。

The author believes that the mechanism of removal organic compound is the special absorption of freshly formed manganese dioxide.

作者认为，新生态二氧化锰去除有机物的机理可能是新生态二氧化锰对有机物的专属吸附。

The running range of company covers the research, development, producing and sale of electric manganese dioxide, cell material and other new material of energy.

本公司经营范围是研究、开发、生产和销售二氧化锰、电池材料和其他能源新材料，目前主导产品是电解二氧化锰。

According to the oxidation of potassium periodate,a new analytical method for the spectrophotometric rapid determination of manganese carbonate produced during bioreducing manganese dioxide was developed.

利用高碘酸钾的氧化性，建立了分光光度法快速测定由微生物还原二氧化锰生成的碳酸锰含量的方法。

We prepared the pyrethric acid II through four reactions: esterification, oxidation, decomposition, diesterification. And the original synthesis route of the pyrethric acidII was improved: the yield of oxidation of allyl rise through increasing the activity of Selenium dioxide; in the document, tert-butyl-trans -2, 2-dimethy1-3-(2"-methoxycarbony1-1"-propenyl)cyclopropanecarboxy late was synthesized from tert-butyl-trans-2,2-dimethyl-3-(2 -formyl-r -propenyl) cyclopropanecarboxylate with two steps, with low yield.

我们经过酯化，氧化，成双酯，热分解四步反应，成功地得到了第二菊酸，并改进了原第二菊酸的合成路线：通过改变二氧化硒的活性提高了烯丙甲基的氧化产率；将原路线中醛氧化成羧酸、羧酸酯化的两步反应改为醛和甲醇、二氧化锰等作用一步直接酯化的方法，减少了反应步骤，提高了总收率。

The graphite and acetylene black are added to a anode material in making Zn-Mn battery, therefore the sample solution prepared appears as feculency and the titration end point of the solution is difficult to judge when active manganese in the battery is determined by iodimetry with starch as a indicator.

在测定锌锰干电池锰粉中活性二氧化锰含量时，由于制备电池时正极锰粉中添加了乙炔黑、石墨等导电材料，使制得的样品溶液显色且混浊，影响用淀粉作为指示剂进行碘量法滴定终点的判断。

The result shows that there is a close relationship between specific capacitance and BET surface areas. Meanwhile the specific capacitance was impacted little by the structure of the nano-manganese dioxides. However, the product performance of high rates, was influenced by structure, the higher rate can be obtained with the more perfect crystal structure.

结果表明，该二氧化锰材料的颗粒尺寸约几十nm，在0.1Ag^(-1)电流密度下放电时产物的比电容最高，可达149Fg^(-1)，二氧化锰的大倍率放电性能与其结构特征直接相关，材料的晶体结构越完整其大倍率放电性能越好。

A PVC/PNBR TPE was prepared based on PVC and powdered NBR using magnesium hydroxide as flame retardant,and the influence of the flame-retardant synergists,such as diantimony trioxide(Sb_2O_3),zinc borate,ammonium heptomolybdate,zinc oxide and manganese dioxide(MnO_2) on the properties of above TPE was investigated.

以PVC和粉末丁腈橡胶为主体材料，氢氧化镁为阻燃剂，制备PVC/PNBR共混型热塑性弹性体，研究阻燃协效剂三氧化二锑、硼酸锌、七钼酸铵、氧化锌和二氧化锰对弹性体性能的影响。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。