查询词典 ammonia

Methods: Uses the atomic absorption flame law immediate determinant, simultaneously when sample digestion has used the strong ammonia water precipitation, also uses the 250 ml kelvin nitrogen bottle digestion law.

采用原子吸收火焰法直接测定，同时在样品消化时采用了浓氨水沉淀，又用250 ml凯氏氮瓶消化法。

Since about 1960,the leading route to acrylonitrile has been by catalytic reaction of propylene with ammonia and air.

大约从1960年起，获得丙烯腈的主要技术路线一直是利用丙烯与氨水和空气的催化反应。

The reaction mixture was cooled to 10 °C and excess liquid ammonia added to form the acyclic carbamate 13 in 95% yield.

在反应混合物冷却到10 ° C和过剩的液氨补充，形成环氨基甲酸酯类13 95 ％的产量。

The hydroxyl amino acid has been replaced, the resulting compounds can also be regarded as ammonia hydrogen has been replaced by acyl derivatives.

羧酸中的羟基被氨基取代后，生成的化合物，也可看作是氨的氢被酰基取代的衍生物。

The COD,ammonia nitrogen and turbidity of secondary effluent can be farther removed by aerated filter and the reclaimed water qualities are improved.

好气滤池同时具有普通滤池和曝气生物滤池的优点，能对二级出水中的COD、氨氮和浊度等指标进一步去除，提高再生水水质。

Aerobic filters have the advantages of both common filters and biological aerated filter. The COD, ammonia nitrogen and turbidity of secondary effluent can be farther removed by aerated filter and the reclaimed water qualities are improved.

好气滤池同时具有普通滤池和曝气生物滤池的优点，能对二级出水中的COD、氨氮和浊度等指标进一步去除，提高再生水水质。

The end of 2007, the company works to professional cleaning service to be extended, with mechanical cleaning technology, central air conditioning cleansing purification project, the robot air duct cleaning, washing of the widely used chemicals, petroleum, petrochemical, oil tank, metallurgical, power, Light industry, printing and dyeing, paper making industries such as equipment boiler, heat exchange, condenser, compressor, ammonia cooler, Air Preheater, equipment Jacket, central air conditioning, heating systems portfolio, and large complete sets of equipment, etc.

07年底，公司业务向专业清洗工程服务扩展、拥有机械清洗技术、中央空调清洗净化工程、机器人风管清洗等，清洗范围广泛应用于化工、石油、石油化工、储油罐、冶金、电力、轻工、印染、造纸等行业的设备（锅炉、热换器、冷凝器、空压机、氨冷机、空预器、设备夹套、中央空调、采暖组合系统、大型成套装置等）清洗和中央空调系统的清洗。

The yield coefficients of cell to each of amino acids except alanine increased with ammonia concentrations.

细胞对所有氨基酸的得率系数均随着氨浓度的增加而下降。

Group ammonia alcohol 120 an annual production capacity of 10,000 tons, chemical fertilizer, chemical products in kind more than the total 2.6 million tons.

集团氨醇年生产能力为120余万吨，化肥、化工产品实物总量260万吨以上。

SnO2/kaolin composite was prepared from SnCl2 and kaolin as raw materials by alcoholysis and ammonia.

以氯化亚锡和高岭土为原料，通过醇解，氨解反应，制备了纳米SnO2/高岭土复合材料。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。