查询词典 esters

In cosmetics, nail polish of the highest content of phthalic acid esters, aromatic components, many cosmetics also contain the substance.

在化妆品中，指甲油的邻苯二甲酸酯含量最高，很多化妆品的芳香成分也含有该物质。

Phthalic acid esters in order to reduce the harm to humans, usually not used to the attention of the best instant hot foam containers.

为了减少邻苯二甲酸酯对人体的危害，平时要注意最好不要用泡沫塑料容器泡方便面。

In this study,we optimize the plastein synthetic conditions from methionine esters and hydrolyzed gelatin under the catalyzation of papain.

本论文制备了一种新型的海狗皮水解明胶，并对该产品作了大量的分析与研究。

The process included the cell disruption of Haematococcus pluvialis, the extraction of crude astaxanthin, the hydrolysis of astaxanthin esters and the purification of free astaxanthin.

该工艺包括雨生红球藻细胞破壁，虾青素的提取，虾青素酯的水解和游离虾青素的纯化分离。

The high stable colorless rosin esters were prepared from rosin and polyhydric alcohol.

针对现有松香酯化产品颜色较深和稳定性较差的缺点，本文首次对催化剂、抗氧剂和光稳定剂等各种化学助剂在松香酯中的应用进行了系统地研究。

By GC-MS analysis, the liquefied products contained oligomers of polyhydric alcohols, carboxylic acids and their esters because of oxidation and esterification of polyhydric alcohols and the decomposed cornstalk components.

GC-MS分析表明，液化产物中主要含有多元醇的低聚合体，以及多元醇和玉米秸秆降解产物的氧化和酯化反应产生的羧酸及其酯。

Even carbon number alkenes, phthalic esters and nitrogen heteroatom-containing components were detected in the elution fractions, while such components were not detected without silica gel column separation, indicating that preseparation is very important for increasing the sensitivity of GC/MS analysis.

各洗脱馏分用GC/MS分析，其可测成分与直接检测相比，多检测出偶碳烯烃、邻苯二甲酸酯类和含氮化合物等，表明合适的预分离对提高GC/MS分析的灵敏度非常重要。

We studied Ireland-Claisen rearrangement of propargylic esters of unsaturated acids.

三、研究了不饱和羧酸炔丙酯类化合物的Ireland-Claisen重排反应。

C-formaldehyde is widely used in rubber, paint, plastics, medicine, spices, agriculture, textile and other industries; propanol mainly to do organic solvents, organic chemical raw materials, spices, synthetic propylamine, Bromopropane etc.; n-butyl alcohol is widely used in the preparation of esters, plastics, plasticizers, pharmaceuticals, and used as a solvent, such as spray paint.

丙醛广泛用于橡胶、油漆、塑料、医药、香料、农业、轻纺等行业；丙醇主要做有机溶剂，有机化工原料、香料、合成丙胺、溴丙烷等；正丁醇广泛应用于制取酯类、塑料增塑剂、医药、喷漆以及用作溶剂等。

Impact of composition upon the cold flow properties for biodiesel was investigated with gas chromatography-mass and cold filter plugging point tester based on the theories of molecular structure and crystal growth. Biodiesel may be considered a pseudobinary mixture consisting of components, with high-melting-point saturated fatty acid methyl esters and with low-melting-point unsaturated ones.

从分子结构出发，根据结晶理论，应用气质联用仪和低温性能测试仪研究生物柴油的组成对低温流动性的影响，为改善生物柴油的低温流动性提供理论指导，并提出生物柴油是伪二元混合物（高熔点的饱和脂肪酸甲酯和低熔点的不饱和脂肪酸甲酯）的观点。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。