还原

In aerobic systems, oxygen is the terminal electron acceptor and is reduced.

在需氧体系中，氧是末端电子接受体并且被还原。

The degree of iron reduction is restrained by the different electron acceptor and provider in the paddy slurry.

水稻土中氧化铁的还原程度受土壤中不同电子供体和受体的制约。

N-（3-Amino-4-methoxyphenyl）acetamide is an important intermediate for the production of azo disperse dyes,while it is still produced by reduction with iron powder in industry currently.

摘 要： N-（3-氨基-4-甲氧基苯基）乙酰胺是生产偶氮型分散染料的一类重要中间体。现有的工业生产方法仍全部采用铁粉还原。

This dissertation deals with the synthetic method of benzotellurazoles containing various substituents in benzene nuclei: introducing tellurium atom to the acetanilide derivatives in ortho-position by direct or indirect ways, then reduced and cyclized to give substituted benzotellurazoles directly or indirectly.

本文系统研究了含各类取代基的苯并碲唑杂环的合成方法，即向原料中用四氯化碲以直接或间接定位的方法引入碲，再经过直接或间接还原关环法制备苯并碲唑。

The influence of PEG and acetone on the photochemical synthesis of Pd nanoparticles was investigated, respectively.

研究了各种组分的影响，探讨了体系中Pd的快速光化学还原和纳米Pd粒子的稳定性机理。

The reduction of acetophenone was studied by cyclic voltammetry and the mechanism has been proposed on the basis of the results.

并利用循环伏安法研究了苯乙酮的还原和电羧化过程的机理。

The results indicated that acetophenone can be reduced by NaBH4/BF3·Et2O wit...

Et2O还原苯乙酮可以获得很高的化学产率和低到中等的对映选择性。

The effects of some factors, such as reaction temperature, reaction time, substrate concentration and yeast concentration, on the acetophenone conversion and- 1-phenylethanol enantioselectivity were investigated by orthogonal experiments.

研究了酵母细胞催化芳香酮的不对称还原反应，采用正交试验综合考察了反应温度、反应时间、底物浓度和酵母浓度等因素对底物苯乙酮转化率和产物1苯基乙醇对映选择性的影响。

The yeast cells asymmetric reduction of aromatic ketone was also study in this work when the acetophenone was as the model substrate.

最后，以2一辛酮(2一Octanone)为模型底物研究了酵母细胞不对称还原前手性脂肪酮的反应特性。

The results indicated that acetophenone can be reduced by NaBH4/BF3Et2O with high chemical yield and low to moderate enantioselectivity when amino alcohols were used as catalysts.

结果表明：这些氨基醇催化NaBH4/BF3Et2O还原苯乙酮可以获得很高的化学产率和低到中等的对映选择性。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。