糠的

Results show that: the concentration of furfural levels off after a certain period of heating to reach equilibrium.

结果表明，达到平衡时，不同温度下糠醛在油纸中有不同的分配比例；温度升高，糠醛在油中含量减少，有从油中向绝缘纸中转移的趋势。

These have limited the development of furfural production. In this paper, one-stage process was reviewed briefly. Two-step process and current development of furfural production were discussed.

本文在对一步法的生产工艺进行概要介绍的基础上，重点对两步法糠醛生产工艺以及糠醛生产工艺的最新进展进行了讨论。

Amounts of 2 furaldehyde and 5 hydroxymethyl 2 furaldehyde in wood vinegar from the treated wood were increased,but amounts of carboxylic acids,phenols,pyrocatechol,guaiacols,and maltol were almost constant.

与未处理材相比，处理材木醋液中糠醛及5 羟甲基糠醛的收量增加，而羧酸类、苯酚类、邻苯二酚、愈创木酚类及麦芽酚的收量几乎不变。

Two skeleton nickel catalysts A and B were prepared at 50 ℃ and 90 ℃ respectively and hydrogenation of furfuryl alcohol to tetrahydrofurfuryl alcohol was studied with the catalysts under different reaction conditions.

研究了以骨架镍为加氢催化剂，以糠醇为原料制备四氢糠醇。在中温和高温下制备了两种骨架镍催化剂A和B，研究了不同的反应条件对两种骨架镍催化剂的影响，确定了最佳反应条件。

The Cu-doped Co-Cu-B catalyst was prepared by chemical reduction of mixed CoCl_2 and CuCl_2 with KBH_4 in a- queous solution and the effect of the Cu-content on the catalytic performance was investigated during liquid-phase furfural hy- drogenation to furfuryl alcohol.

用KBH_4还原CoCl_2和CuCl_2混合溶液制得Co-Cu-B催化剂，用于糠醛液相选择性加氢制糠醇，研究了不同Cu掺入量对催化剂性能的影响，发现当Cu：Co的摩尔比为9.64×10~(-3)时，催化活性达到最佳。

The chemical constituents of extracts of Tamarindus indica L were determined by GC-MS. The relative contents of constitutes were determined by area normalizing method. 48 compounds were identified, amounting to total mass fraction 98.5%. The main compounds were 5-methyl-2(3H)-furanone, diethyl succinate, furfural, hexadecanoic acid, linolenic acid, 5-methylfurfural, oleic acid, linoleic acid, etc.

并利用气相色谱仪-质谱仪对罗望子萃取物的化学组成进行了分析鉴定，并用面积归一化法测定了各种成分的质量分数，共鉴定了48种成分，占总质量分数为98.35%，其中主要成分为：5-甲基-2(3H)-呋喃酮、丁二酸二乙酯、糠醛、十六酸、亚麻酸、5-甲基糠醛、油酸、亚油酸等。

The factors which mostly affect the quality and output of the product including molar proportion of reagents, reaction temperature, alkaline concentration and reaction time are analyzed. After orthogonal experiment, it is concluded that the optimized reaction condition is that acetone and furfural are charged with equal molar quantities at 40 with sodium hydroxide (0.10 mol/L) and the operation time 5 h.

通过对影响亚糠基丙酮质量和收率的主要因素原料配比、反应温度、碱浓度、反应时间等单因素实验，探索出合成亚糠基丙酮的优化反应条件为：原料配比n：n=1.0：1.0、反应温度40℃、氢氧化钠溶液浓度为0.01 mol/L、反应时间5h。

Bran spirit refers to spirit brewed with various grain chuffs.

糠麸白酒是指用各种粮食的糠麸酿制的白酒。

The fractured surfaces and the structure of the resin binder links, which exist in nitrogen-free high-furfuryl-alcohol resin sand mixture and in high-nitrogen content low-furfuryl-alcohol resin sand mixture respectively are investigated by the aid of scanning electronic microscope.

本文通过扫描电镜分别对高糠醇无氮树脂砂和低糠醇高氮树脂砂断口的破裂形式，树脂膜组织结构进行了观察和研究。

Some technologies,including olefines from methanol,oxalates and ethylene glycol from carbon monoxide,carbon dioxide-based polymers,chemicals from the syngas prepared by biomass gasification,acetone and butanol by fermentation,and chemicals from acetylene,ethanol,glycerol,furfural,hydroxymethyl furfural and starch,were reviewed.

包括甲醇制烯烃，一氧化碳制草酸酯和乙二醇，乙炔化学品，二氧化碳聚合物，生物质气化合成化工产品，发酵法生产丙酮、丁醇，乙醇衍生化工产品，甘油合成化工产品，糠醛和羟甲基糠醛合成化工产品，淀粉合成化工产品等重要的石油替代化学品生产技术被介绍。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失