查询词典 COD

The fifth chapter gets the disturbing characteristic of the flaw by analysis the material characteristic. It analysis and calculates disturbing characteristic of the length of the limiting flaw with the special mathematics mode, and it notarizes the flaw life with the COD way on the basis of analysision of magnitude of the stress.

本文第五章通过对材料属性的分析，得出裂尖启裂因子的分布特性，通过特定的随机数学模型，分析计算并导出了临界裂纹长度的分布特性，并在对应力幅的分析基础上，运用COD方法来确定裂纹扩展寿命，最终运用Monte-Carlo模型计算得到了裂纹扩展寿命的分布特性。

The results show that the dosage and cost of their triturated cogulator are the lowest, COD removal rate is over 86%, SS removal rate is over 90%,and the end effluent meets the discharge standard.

结果表明，使用该所研制的KN—Ⅰ絮凝剂处理厌氧出水，絮凝剂的用量、费用最低，COD去除率达到86%以上，SS去除率达到90%以上，最终出水达到国家排放标准。

The main process of metal wire drawing wastewater treatment is removing impurity and demulsification. This article took Saint Electrician production workshop waste wiredrawing fluid (in which, COD content is 11 233 mg/L, pH value is 8.4 and the content of wire drawing oil is 4%) as research object, used chemical demulsification method and through laboratory experiment, adopted electrolyte and coagulant separately to deal with the wastewater.

金属拉丝废水的处理工艺主要过程是去除杂质和破乳，以赛特电工生产车间的废拉丝液为研究对象（COD含量为11 233 mg/L，pH值8.4，拉丝油含量4%），选用化学破乳法，通过实验室实验，分别采用电解质和混凝剂处理废液。

The experiment results shown that: 1 the smaller the pH value, the smaller the use amount of alkaline metal and the alkali earth metal electrolyte demulsifier, when the pH value was 3, the waste fluid could be demulsified no any demulsifier and the use amount of the demulsifier did not increase remarkably along with the wiredrawing fluid concentration increased. 2 Using polymeric ferric sulfate as coagulant demulsifying, when the pH value was 8.4, the best adding amount was 40 mL per liter wastewater and the best precipitation time was 4 hours. Then the COD concentration was 480 mg/L, reaching the water quality requirements to enter the sewage treatment plant.

pH值越小，碱金属和碱土金属电解质破乳剂的用量越小，pH值为3时，无须加入任何破乳剂即可破乳；破乳剂用量并不随拉丝液浓度的增大而显著增加。2）用混凝剂聚合硫酸铁破乳，在pH值8.4时，最佳投加量为40 mL/L，最佳沉淀时间4 h，处理后上清液COD浓度为480 mg/L，能满足进入污水处理厂水质要求。

Results indicated that two systems showed good ability to remove COD, LAS and ammonia nitrogen.

结果表明，两个系统对COD、LAS及氨氮的去除均具有良好的处理效果。

Meanwhile, by modeling the sewage diffusion, it is found that the range of the Changjiang Estuary sewage diffusion area can reach the East Chongming Bank, the Deep water Channel, and the Nanhui Bank, while the COD concentration near Meimaosha is especially high so that the sewage diffusion constitutes a threat to the water quality of Meimaosha area.

同时，通过对污染物扩散的数值模拟，本文发现长江口污染物的扩散范围能够到达崇明东滩、深水航道和南汇边滩，而没冒沙附近区域的COD浓度更是尤其地高，所以污染物扩散对没冒沙地区的水质也形成了一定的威胁。

Through taken the measurements of pH, TOC, UV-Vis spectra and high-performance liquid chromatograph in the degrading process of solution ,it was found that the COD of dye solution increased, pH continuing declined and TOC reduced gradually. The UV-Vis spectra and high-performance shown that though dye molecules had been destroyed, Strong Chromophore Azo Double Bond of dye was certainly under attack, the big conjugated system was vandalized and dye molecules were decolorized degradation, but they were not completely changed into carbon dioxide and other inorganic matter by mineralization, it appeared accumulation of aromatic ring and double benzene nucleus, so it is thus evident that complete destruction of aromatic ring is more difficult than the double benzene.

通过测定直接大红染料脱色过程中的溶液pH、TOC、紫外可见光谱图和高效液相色谱图可知，在脱色处理时间(6h)范围内，染料溶液的COD值增大， pH值持续下降，TOC值逐渐降低，结合紫外可见光谱图和高效液相色谱图，说明染料分子虽然已经遭到破坏，染料分子内强生色基团偶氮双键确实遭到攻击，大的共轭体系被破坏，染料分子被脱色，却没有完全被彻底矿化成二氧化碳等无机物，出现了芳环和萘环结构的累积现象，可见完全破坏芳环比破坏偶氮双键发色团更困难。

On my way back downeast I stopped by Cod End, a shop and purveyor of Port Clyde Fresh Catch in Tenants Harbour, a town just up the road.

在我回去的&东下&的路上，顺便去了一下Cod End ，它是Port Clyde新鲜鱼类市场在前面不远处 Tenants Harbour镇的代理店和供应商。

The phosphorus release/COD consumption in the end of anaerobic phase were 0.35 and 0.27 when acetate and propionate were used as the carbon source, respectively.

结果表明，在采用乙酸作为碳源时，厌氧结束放磷和消耗COD的比值为0.35，生成的PHA中以PHB为主，占92.6%，PHV只占到7.4%，没有PH2MV生成。

The removal rates of COD and oil are 97.7% and 99.8% respectively.

出水 COD和石油类的去除率分别达到 97.7%和 99.8%。

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。