查询词典 sulphuric acid

Hexen-1-ol, Hexanal, Hexyl acetate, Butanoic acid, 2-hexenyl ester,, 3-t-Butyl-oct-6-en-1-ol were the characteristic aroma components of'Brookes'sweet cherry fruit.

2－己烯－1－醇、己醛、乙酸己酯、-丁酸－2－己烯酯、3-异丁基-6-烯-1-辛醇是不鲁克斯甜樱桃成熟果实的特征香气成分。

The esterification of acetic acid with n -butanol was used for measuring the activation of catalysts.

制备 Fe2 O3 / SO4 2 -固体超强酸催化剂，通常使用的方法是沉淀-硫酸酸化法[1～ 3 ] 。

Etherification of butanol with ethylene oxide by a new style solide acid catalyst is investigated.

研究了丁醇和环氧乙烷在一种新型固体酸催化剂上的醚化反应。

The influences of reaction temperature, ratio of citric acid to butanol, and the mass of catalyst on esterification performance were emphatically studied.

采用正交实验考察了反应温度、催化剂用量、酸醇摩尔比对柠檬酸转化率的影响，得出最佳反应条件为：反应温度120℃、催化剂用量为总物料质量的1.5%、酸醇摩尔比1：4。

Catalytic activity of phosphotungstic acid on synthesizing butanone 1,2-propanediol ketal was discussed,the factors influencing the synthesis were discussed and the best conditions were found out.

探讨了磷钨酸对丁酮1，2 丙二醇缩酮合成反应的催化活性，研究了酮醇摩尔比、催化剂用量、反应时间等因素对产品收率的影响。

Cyclophos phamide confecting dilution solvent to make full use of solvent-methylbenzenesulfonic class, aminomethylbenzoic: acetic acid: butanone = 2: 5: 3 of the mixed solvent

配制不浓缩溶剂时只管即便多用甲苯类溶剂，可以采取甲苯：乙酸：丁酮=2：5：3的纯合溶剂

The isobutane/butene alkylation reactions over a solid acid catalyst were carried out under liquid phase and supercritical conditions respectively.

分别在液相和超临界两种反应条件下进行了固体酸烷基化催化剂的烷基化反应，并以超临界异丁烷流体对失活催化剂进行了再生。

Study on Alkylation of Isobutane with Butene over WO3/ZrO2 Strong Solid Acid Ⅱ.

篇名 WO3/ZrO2固体强酸催化剂上异丁烷／丁烯的烷基化反应Ⅱ。

At present, the company's main products have a natural plant extract powder: Ramie leaf, mulberry leaf, butterbur vegetables, pine bark flaxseed lignans, bears fruit leaf, ginseng, such as plant extracts and oysters, silk, mother-of-pearl animal extracts such as animal polysaccharides, amino acids, and hyaluronic acid.

目前，公司生产的主要产品有天然植物提取物精粉：苎麻叶，桑叶，蜂斗菜，松树皮亚麻籽木酚素，熊果叶，人参等植物提取物和牡蛎，蚕丝，珍珠母等动物提取动物多糖，氨基酸，和透明质酸。

Our buttocks have been in the car sitting acid.

我们的屁股都已经在车上坐酸了。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。