查询词典 nitric acid

PAN-ACF was modified by different methods, such as heat oxidation, nitric acid dipping and hydrogen peroxide dipping, the characteristics changes of the PAN-ACF before and after modification such as kinds of surface functional groups, amounts of oxygen function groups, surface microstructure and specific surface were analyzed by FT-IR, Boehm.

采用热氧化、硝酸浸渍、过氧化氢浸渍等方法对聚丙烯腈基活性炭纤维进行改性处理，使用FT-IR、Boehm滴定法、SEM、BET等分析技术表征了改性前后PAN-ACF表面官能团种类、含氧基团数量、表面微观结构及比表面积等表面特性。

Using kerosene and 40%n octanol as diluents,some lanthanide and actinide can be extracted effectively by amido podand from nitric acid solutions.

以酰胺荚醚为萃取剂，正辛醇和煤油的混合物作稀释剂，研究了水相硝酸浓度和不同结构酰胺荚醚对镧系和锕系元素萃取分配比的影响，并对它们的萃取性能进行了比较，结果表明，适当的酰胺荚醚可以有效地从硝酸溶液中萃取镧系和锕系元

Fresh Alocrom 1200 coatings may be removed without seriously etching the aluminium by immersing in 50% nitric acid or in the Deoxidiser bath.

刚做的ALCOCROM 1200镀层可以浸没在50%的硝酸里或者脱氧剂Deoxidiser浴缸里去除镀层，而不会明显地腐蚀铝材。

Based on the principles of chemical corrosion, this article discussed how to use variant erodents of nitric acid in alcohol to reveal the metallographic structure of one phase alloy and multiphase alloy .

作者从化学腐蚀原理出发，对不同浓度的硝酸酒精侵蚀剂显示单相合金与多相合金的金相显微组织进行了研究和探讨。

For the welding of Cr17 ferritic steel. Especially suitable for nitric acid containers

适用于Cr17铁素体钢的焊接，特别适用于硝酸容器的焊接。

In the fourth chapter, the techniques of N2 adsorption and TPD were used to examine the texture and surface chemical properties of activated carbon before and after treatment of nitric acid and air oxidation, and effects on the performance of gas diffusion electrode were also studied.

在第四章中采N_2吸附和TPD法详细研究了硝酸氧化和空气氧化处理对活性碳孔结构和表面化学性质的影响，考察了活性碳性质与气体扩散电极性能之间的关系。

The Pt-Rh or Pt-Pd-Rh alloys knitted catalytic gauzes were tested for nitric acid production in four atmospheric pressure ammonia oxidation furnaces, which were divided into two sets.

摘 要：在H厂生产硝酸的2套机组4台氨氧化常压炉中用Pt-Rh或Pt-Pd-Rh针织催化网作实验，并将稀土强化Pt-Pd-Rh针织催化网与该2种催化网进行了应用比较。

The Pt-Rh or Pt-Pd-Rh alloys knitted catalytic gauzes were tested for nitric acid production in four atmospheric pressure ammonia oxidation furnaces,which were divided into two sets.

在H厂生产硝酸的2套机组4台氨氧化常压炉中用Pt-Rh或Pt-Pd-Rh针织催化网作实验，并将稀土强化Pt-Pd-Rh针织催化网与该2种催化网进行了应用比较。

It has a 'soft' neon tube ozoniser which does not produce NO fro air feed gas and therefore does not suffer from nitric acid production if the air feed gas is not totally dry and it does not produce an error in the NO2 reading due to a difference in window contamination due to the filtering effect of the NOx converter.

Signal Model 4000VM 提供 NOx/NO/NO2 连续输出，每3秒钟刷新一次数据，等同于 ECO 双反应室设计，它有一个氖管臭氧发生器，不会经由空气原料气生成 NO ，因此当空气原料气不完全干燥的情况下也不用担心产生硝酸，由于 NOX 转化炉产生过滤效应但污染物是在不同的窗口，所以 NO2的读数不会出现误差。

Among them, the glue solvent addition-nitric acid had a greater impact, and its amount was controled at 8%~10% for the best; 2though the result of the ball catalyst prepared by oil ammonia column was better, the process was more complex; 3performance of the catalyst prepared by impregnation ball support was poor.

其中，胶溶剂硝酸的加入量有较大影响，其用量控制在8%～10%为最佳；2油氨柱滴球成型法制得的球形催化剂虽然齐聚反应效果较好，但工序较复杂；3浸渍球形载(来源：A61BcacaC论文网www.abclunwen.com)体法制得的催化剂催化性能较差。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。