查询词典 acetic aldehyde
- 与 acetic aldehyde 相关的网络例句 [注:此内容来源于网络,仅供参考]
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In the test 5 treatments of single-sowed alfalfa or smooth brome grass, and their mix-sowing with different ratios of 50%+50%, 60%+40% and 70%+30% were set up to analyze pH, CP, NDF, ADF, acetic acid, butyric acid, lactic acid and total acid of the silage in each treatment and study the effect of alfalfa and smooth brome grass with different mix- sowing ratio on silage quality.
方法]试验设5个处理,即紫花苜蓿单播、无芒雀麦单播、紫花苜蓿+无芒雀麦以50%+50%、60%+40%和70%+30%比例混播,分析各处理青贮材料的pH值、CP、NDF、ADF、乙酸、丁酸、乳酸和总酸的变化,研究无芒雀麦与紫花苜蓿不同比例混播对青贮品质的影响。
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Bromothiophene was synthesize d from thiophene through bromination to give 2,3,5-tribromothiophene,then reduced by Zinc in acetic acid.
以噻吩为原料,先和溴素反应合成2,3,5-三溴噻吩,再以锌作还原剂在乙酸溶剂中反应得到3-溴噻吩,主要研究了第一步反应时的原料配比对反应的影响及第二步的反应时间对反应的影响,反应总收率达72.6%。
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Bromo-2′,4′-dichloroacetophenone was synthesized in three steps,w hich were bromization ,chlorination and acylation,from glacial acetic acid and m -dichlorobenzene.
以冰乙酸和间二氯苯为原料,经溴化、氯化、酰化三个步骤,制得 2—溴- 2′,4′-二氯苯乙酮,产率达 70 %。
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Pyruvaldehyde was synthesized with acetone or 1,2 propanediol as starting material respectively.With n∶n=1 00∶0 79,3 0-4 0 g potassium chlorate as catalyst,and water and glacial acetic acid as solvent,refluxing on water bath of 60-75 ℃ for 4 h,bromoacetone was obtained in 63 5% yield.
分别用丙酮和 1,2 丙二醇做原料合成了丙酮醛。n∶n =1 0 0∶0 79,加入 3 0~4 0g氯酸钾做催化剂,水和冰醋酸做溶剂,水浴温度为 6 0~ 75℃,回流 4h ,制得产率为 6 3 5 %的溴丙酮。V∶V =11 9∶1 0 ,通入空气,在 6 5~ 70℃反应 5~ 8h ,制得产率为 5 9 6 %的丙酮醛。
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Separating acetobacter acetic strains adopted the changing colour circle method with bromocresol purple indicator.
采用溴甲酚紫作为指示剂通过变色圈法,从其中分离醋酸菌。
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Acetic acid ethenyl ester, polymer with ethenol, cyclic acetal with butanal
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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Cellulose acetate butyrate with high or low degree of butyryl substitution was synthesized in heterogeneous system(butyric acid/ acetic acid/ butyric anhydride/ sulfuric acid) using the "free solvent" method. The effect of activation time, esterification time, the molecular weight of cellulose and the content of the organic acid or anhydride on the degree of acetyl and butyryl substitution of cellulose was discussed.
在非均相体系中进行酯化反应,采用&反应性溶剂&,以硫酸作为催化剂合成出从高丁酯含量到低丁酯含量的纤维素醋酸丁酸酯,研究有机酸以及酸酐的添加量、活化时间、酯化反应时间以及原料纤维素的分子量对酯化产物纤维素醋酸丁酸酯的影响。
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Butyric acid. The addition of probiotics to blueberry husks lowered the level of caecal acetic acid and increased that of propionic acid, while rye bran in combination with probiotics increased caecal CA levels and decreased distal colonic levels.
在黑莓壳中加入有益菌种能降低盲肠内的乙酸并增加其内的丙酸,然而黑麦麸与有益菌联合能增加盲肠内的CA水平并降低结肠远端的CA水平。
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MethodsMouse twisting numbers induced by acetic acid, mouse pain threshold after heat stimulation on hot-plate and in hot-water tests were observed to investigate the analgesic effects, meanwhile, the contents of prostaglandin E (PGE2) and malondialdehyde and the activity of superoxide dismutase in mice serum and cerebrum were measured to explore primary analgesic mechanisms of calonyction aculeatum beans.
方法采用醋酸致小鼠扭体法,小鼠热板法及小鼠温浴法,观察月光花豆乙醇提取物的镇痛作用,同时检测热板法小鼠的血清和脑组织PGE2、MDA的含量及SOD活性。
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The quantity ratio of four main esters in Taishan Tequ is reasonable, the content of caproic acid and acetic acid is comparatively higher in Taishan Tequ, the content of n-propanol is also a bit high, and the content of aldehydes is suitable.
泰山特曲具有合理的四大酯量比,己酸、乙酸含量较高,正丙醇含量稍高,适量的醛类物质。
- 推荐网络例句
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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。
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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。
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This is a very big challenge to developers especially that Ajax is constantly changing.
这对开发者来说是一个非常大的挑战,尤其是需要不断变化的Ajax。