查询词典 dicarboxylic acid

Oxalic acid 2 , is the first of the series of dicarboxylic acids.

草酸 2 ，是该系列的二元酸。

For dicarboxylic acids, oxalic acid and malonate acid were the two predominant species, with annual average concentrations of 548.13 ng·m-3 and 530.1 ng·m-3, respectively.

采用GC/MS定量分析了2003年9月至2004年7月期间北京市PM2.5中33种脂肪酸（C10~C32）和10种二元酸（diC2~diC11）的含量。

Malonic acid and succinic acid are the major dicarboxylic organic acids excreted by roots in the Brassica rhizosphere.

十字花科根圈中，以丙二酸及琥珀酸占有较高的比例，约62~100%，其为十字花科主要的双羧基有机酸物种。

The invention relates to condensation products comprised of cyclic carboxylic acid anhydrides of dicarboxylic acids, tricarboxylic acid anhydrides or tetracarboxylic acid anhydrides and difunctional polyamines, especially polyoxyalkylene amines.

本发明涉及由二元羧酸的环状羧酸酐、三羧酸酐或四羧酸酐和二官能化多胺，特别是聚氧化烯胺制备的缩合产物。

The proportion of the phase transfer catalyst and tertiary amine are usually in the range of about 1-5 and about 0.01-5.0 mole percent, respectively, based on total dihydroxyaromatic compound and dicarboxylic acid employed. In the second phosgenation step, the pH is raised to at least 10 and a stoichiometric phosgene excess of at least 5% is introduced.

相转移催化剂和叔胺的比例以二羟基芳族化合物和二羧酸的总量为基础计通常分别在约1―5和0.01―5.0摩尔百分数的范围内，在第二步光气化步骤中，pH值升高到至少约10，并导入超过化学计量约至少5wt％的光气。

In this paper, according to principles of molecular design, Cu, Cu,Ag, Pd were selected as templates, and 2,2'-Bipyridyl-3,3'-dicarboxylic acid (H2bpdc) mainly acted as building blocks.

本课题通过分子设计，以Cu，Cu，Pd，Ag为模板，主要以2，2'-联吡啶-3，3'-二羧酸(H2bpdc)为构件，用溶剂热法合成新的配位聚合物，测定其晶体结构，并研究其导电性和热行为。

The conversion rate of rosin has been more than 85%, this ramification of rosin has a high reactivity, it can be additional polycondensated with dicarboxylic acid, synthesizing such as air-drying unsaturated polyester et al, so it can provide a new way for the deep processing of rosin, and...

该松香衍生物具有高的反应活性，可与二元酸加成缩聚，例如合成气干型不饱和聚酯等，从而提供了一种松香深加工利用的新途径

In the key support's project may see from the plan, products and so on refinery, ethylene, xylene, fine dicarboxylic acid, chemical fertilizer, alkene receive the direct support.

从规划中重点支持的项目中可看出，炼油、乙烯、二甲苯、精对苯二甲酸、化肥、烯烃等产品受到直接支持。

Throws the increment in the sodium hypochlorite is 10%,曝气 the time is 1 hour its processing efficiency reaches as high as 98.10%, simultaneously may know: The ultrasonic wave degeneration dicarboxylic acid effect is not ideal

在次氯酸钠投加量为10％，曝气时间为1小时其处理效率高达98.10％，同时可以得知：超声波降解对苯二甲酸效果不理想

Throws the increment in the sodium hypochlorite is 10%, the time hour its processing efficiency is high 98.10%, simultaneously may know: The ultrasonic wave degeneration dicarboxylic acid effect is not ideal.

在次氯酸钠投加量为10％，曝气时间为1小时其处理效率高达98.10％，同时可以得知：超声波降解对苯二甲酸效果不理想

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。