查询词典 nitrate

Many researchers believe that the cancers result from the nitrate and nitrite taken in.

许多学者认为，这与人体摄入的硝酸盐和亚硝酸盐的量呈明显的相关性。

Study on accumulation of Nitrate in Vegetables.

蔬菜硝酸盐累积的研究。

"Saltpetre (or nitre also spelled saltpeter orniter):Transparent, colourless, or white powder or crystals of potassium nitrate (KNO3), found native in deposits."

硝石：硝酸钾的无色透明白色的粉末或结晶体，产于天然的矿床。

"Saltpetre (or nitre also spell ed saltpeter orniter):Transparent, colourless, or white powder or crystals of potassium nitrate (KNO3), found native in deposits."

硝石：硝酸钾的无色透明白色的粉末或结晶体，产于天然的矿床。

According to the above study results, especially the steady operation of two-sludge system（2A/O+N 2SBR）, it can be proved that denitrification and excess phosphorus uptake are relatively independent and intersectant biological processes. The overlap is that denitrifying phosphorus removing bacteriawhich possesses the two bacterial metabolisms, could utilize nitrate as an electron acceptor for phosphorus uptake. The two-sludge system can not only combined biological phosphorus removal and denitrification processes to form a process in practical wastwater treatment , but also solved the main difficulties of current single-sludge systems:①the sludge age competition between phosphorus removing bacteria and nitrifier;② the substrate competition between denitrification and dephosphatation.

以上的研究结果，尤其是时间序列的双泥生物反硝化除磷脱氮系统工艺（2A/O+N 2SBR法）的稳定运行，不仅证明了生物脱氮与生物除磷是两个既相对独立又相互交叉的生理过程，其交叉点是同时拥有硝酸盐还原性和超量吸磷这两种生化特性的细菌进行的反硝化吸磷脱氮生化反应，而且双泥系统工艺克服了常规单泥生物脱氮除磷工艺的两大问题（①聚磷菌和硝化菌的SRT相互干扰；②反硝化与生物除磷竞争VFA），同时保证了脱氮和除磷效果，排水指标达到污水综合排水标准（GB8978-1996）的一级标准，具有实际工程使用价值。

Nitrite and nitrate levels should also be at zero to prevent your fish from dying.

亚硝酸盐和硝酸盐的水平也应为零，以避免您的鱼类死亡。

To establish a method for determination of nitrite and nitrate in pickled vegetables simultaneously.

目的 建立同时测定泡菜中亚硝酸盐和硝酸盐含量的离子色谱法。

The effects of nitrate and nitrite pollution in drinking water source on cancer mortality were explored.

本文探讨了饮用水源中硝酸盐和亚硝酸盐污染对癌症死亡率的影响。

The results showed that short SRT bacteria and nitrobacteria can be cultivated separately in the reactor so that the concentration of nitrate in the circumfluence sludge is low, which is lower than 1 mg/L.

结果表明，在反应器内能实现短泥龄细菌和硝化细菌的分相培养，有效降低了回流污泥中硝态氮的质量浓度，其值小于1mgL^(-1)。

To oxidizeinto nitric acid,nitrous acid,or any nitrate or nitrite,especially by the action of nitrobacteria.

硝化将氧化成硝酸、亚硝酸或任何硝酸或亚硝酸酯，尤指通过硝化细菌的作用

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。