丁二酸的

Twelve kinds of volatile products in the fermentation broth were determined, in which ethanol, acetic acid, 1, 2-ethanediol, butanoic acid and glycerine were the major compounds, and they can be utilized by methanogenic organism directly or be changed into compounds that can be utilized by methanogens organism directly.

MC1分解木薯渣过程中可溶性物质总含量开始为18%，3 d后达到最高，为33%，GC-MS测定挥发性产物的总量在培养6 d后达到最高，挥发性产物共检测出12种，其中量较大的化合物为乙醇、乙酸、乙二醇、丁酸及甘油，这些产物为甲烷发酵菌可直接利用或者容易转化为甲烷菌直接利用的成分。

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。

The optimum conditions were determined as follows:the molar ratio of butyraldehyde to glycol was 1∶1.6,the mass ratio of catalyst to reactants was 0.4%,the volume of cyclohexane as the water-carrying agent was 10 mL,and the reaction time was 60 min.

结果表明，磷钨钼杂多酸对合成丁醛乙二醇缩醛有较好的催化活性，适宜的反应条件如下：n∶n=1∶1.6、催化剂用量为反应物料总质量的0.4%、带水剂环己烷用量为10 mL、反应时间为60 min。

Since a precursor solution becomes easier to interpenetrate in a separator and an electrode when butyric acid is contained in the precursor solution of a gel electrolyte, a manufacturing process of the gel electrolyte secondary battery is improved.

在凝胶电解质的前体溶液中含有丁酸，前体溶液可以容易渗入隔板和电极中，可以改善凝胶电解质二次电池的制造工序。

The combination of ion-pair extraction technology with reversed-phase ion-pair chromatography method provide a effective inspection measure for the sulfonates in water.

样品的四丁基溴化铵和二氯甲烷离子对萃取方法与反相离子对色谱分离联用，为水体中芳香族磺酸盐的检测提供了可靠的监测手段。

The dibutyltin arylcarboxylates not only displayed a good acaricidal activity, but also showed certain fungicidal activity.

1二丁基-锡羧酸酯具有较好的杀螨活性和一定的杀菌活性。

The emphasis was on chemical properties,application,main production methods,market,and prospects of main deriva- tives of acetaldehyde such as ethyl acetate,pentaerythritol,glyoxal,peracetic acid, crotonaldehyde and pyridine.

介绍了国内外乙醛及其主要衍生物的生产技术发展及其市场供需状况，尤其对乙醛主要衍生物乙酸乙酯、季戊四醇、乙二醛、乙醛酸、丁烯醛、吡啶的化学性质与用途、主要生产方法、市场供需状况及开发前景作详细介绍和分析。

With peroxide value as experimental index, the oxidative stability of cold pressed oil of Xanthoceras sorbifolia Bunge seed was studied by Schaal experiment using TBHQ, PG and V as antioxidants, V and critic acid as synergists.

采用Schaal烘箱加速法，以叔丁基对苯二酚、没食子酸丙酯、生育酚V(下标 E为抗氧化剂，抗坏血酸V(下标 C和柠檬酸为增效剂，过氧化值为试验指标，研究了光线、温度等对冷榨文冠果籽油抗氧化性能的影响。

Aliquots were subjected to impedance aggregometryin response to collagen, adenosine diphosphate, ristocetin,and arachidonic acid performed at 22°C, 34°C, 37°C,and 40°C.

一部分用作在22°C 、34°C 、37°C 和40°C 下测定对胶原、二磷酸腺苷、瑞斯西丁素和花生四烯酸反应中的阻抗集合度测试。

After the digestion of the samples of the effort of the mixed acid, in the condition of pH=2~2.8, the lead in the sample solution and the added pyrrolidine a two-ammonium thiosulfate can come into being a metal complex. With A methyl isobutyl ketone extraction, the lead complexes can be divided from the water phase.

采用混合酸对样品进行消化处理后，在pH2~2.8时，样品溶液中铅与加入的吡咯烷二硫代氨基甲酸铵形成金属络合物，用甲基异丁基甲酮萃取，使铅络合物与水相分开。

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。