查询词典 acid reaction

The results showed that there three important factors to influence the yield: that is concentration of the acid,concentration of reactant and reaction temperature.

发现了影响产率的三个重要因素分别是：酸类型和浓度、反应物浓度和反应温度。

Furthermore, a convenient procedure for synthesis of unsymmetric squarylium cyanies has been developed. We find the particular reactiveness between benzotellurazolium lodide and squaric acid: only 1: 1 condensation is involved in this reaction. The resultant can condense easily with benzothiazolium iodide to give unsymmetric squarylium dye of unique component.

研究了苯并碲唑季铵碘盐与方酸的特殊反应性，发现它们只发生1：1缩合，缩合产物可与苯并噻唑碘盐反应生成染料，从而提供了制备单一组分的不对称方酸碲菁染料的简便方法。

Rhodamine B and p-Nitrobenzoic acid were taken as examples, we studied their oxidative reaction and degraded products in detail.

并以罗丹明B、对硝基苯甲酸为例作了较为详细地研究和降解碎片分析。

Three new-type charge-transfer salts were synthesized based on the reaction of three kinds of basic dye (crystal violet, safranine T, methylene blue BB, respectively) and tungstophosphoric acid of Keggin structure.

报道了用Keggin结构的磷钨酸与碱性染料结晶紫、碱性藏红T和碱性湖兰BB反应形成的3种新型电荷转移盐。

The optimum conditions to synthesizeβ-carboxyethyl organogermanium sesquioxide were established through orthogonal test: the time from beginning to adding sodium hypophosphite was 0.5h; the molar ratio of germanium dioxide, hydrochloric acid and sodium hypophosphite was 1:7.4:1.4; addition reaction time was 1.5h.

用正交试验确定了最佳工艺条件：从反应开始到加次亚磷酸钠的间隔时间0.5h；n：n：n=1 ： 7.4 ： 1.4；加成反应时间1.5h。

The reaction mechanism between soluble silicic acid and aluminum in natural water was studied by the detection of concentrations of monomer and soluble aluminum.

通过考察单核铝和溶解铝浓度的变化，对天然水体中溶解性硅酸与铝盐的反应机理进行研究。

It is proposed that the sturdiness of silicic acid congealed gel is a key factor to make the reaction of producing"Lead Trees" successful.

文摘：提出了生成"铅树"反应成功的关键是硅酸凝胶的坚固性，找到了较好的硅酸凝胶的制备条件，使该氧化还原平衡移动的反应成功率提高了90％以上。

Methods The template DNA was extract from the human osteosarcoma cells line U－2OS by the single- step isolation method with isothiocyanic acid guanidine, the cDNA coding for the mature fragment of BMP－4 was amplified by the reverse transcription- polymerase chain reaction.

方法采用异硫氰酸胍一步法从人骨肉瘤细胞株U-2OS中提取总RNA，通过逆转录-聚合酶链反应扩增为BMP-4成熟区cDNA基因片段。

The reaction processes of preparing sodium diacetate from acetic acid and sodium carbonate are studied.

本文对乙酸—纯碱法制备双乙酸钠反应过程进行了研究。

The chlorine dioxide disinfection solution was produced by the reaction between sodium chlorate and hydrochloric acid in chlorine dioxide generator.Filter membrane method was used to observe its efficacy in killing Escherichia coli in water and its influencing factors.

二氧化氯消毒液由二氧化氯发生器将氯酸钠与盐酸反应生成，采用滤膜法对其杀灭水中大肠杆菌的杀灭效果与影响因素进行了观察。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。