还原的

Acetoin dehydrogenaseactivity both in mutant strain UV-3 and the parental strain 10293 were lower than 0.001U/mg.

乳酸脱氢酶、双乙酰还原酶和α-乙酰乳酸脱羧酶三种酶活最低的pH分别为7.0、7.0和7.5左右。

Formyl-3-acetyl-4-methyl-5-carbobenzoxypyrrole (6) was synthesized via the selective oxidation of 2,4-dimethyl-3-acetyl-5-carbobenzoxypyrrole (5), which was produced from acetylacetic benzylester (1) via nitrosation, reduction and addition-cyclization with acetylacetone. The total yield of the product was about 34%.

以乙酰乙酸苄酯(1)为原料，经过亚硝化、还原、与乙酰丙酮加成环化生成2， 4-二甲基－3-乙酰基－5-苄氧羰基吡咯(5)，通过选择性氧化反应制得目标化合物2-甲酰基－3-乙酰基－4-甲基－5-苄氧羰基吡咯(6)，反应的总收率约为34%。

The effects of cryopreservation (-196℃) on the antioxidant activities of enzymes (SOD, CAT, GSH-PX and GR) in seminal plasma and spermatozoa of Russian sturgeon Acipenser gueldenstaedti were studied by a reagent kit to clarify damage mechanism of spermatozoa.

为了探讨超低温(-196℃)对精子的损伤机理，采用试剂盒测定了冷冻前后俄罗斯鲟精浆和精子中超氧化物歧化酶、过氧化氢酶、谷胱甘肽过氧化物酶和谷肽甘肽还原酶等酶活性。

The effect of redox potential regulation on metabolite flux distribution of Actinobacillus succinogenes NJ113 was studied by using the metabolic flux analysis method.

利用代谢通量分析方法分析了氧化还原电位调控对产琥珀酸放线杆菌NJ113厌氧发酵产丁二酸过程的影响。

The adrenochrome can also take part in oxidation-reduction reaction when the potential is about zero volt, consequently, there is another pair of oxidation-reduction peaks correspondingly in the cyclic voltammogram. The deproton step of the protonated adrenalinequinone, viz.

在强酸性溶液中，由于质子化的肾上腺素醌脱质子步骤即第三步难以进行，故不发生一系列后继化学反应，电解产物停止在肾上腺素醌，从而在循环伏安图上只有一对氧化还原峰。

Aim at diluting and eliminating agminated or dispersed pigments which caused by various flecks, deoxidized pigment for those have melanin forming badly, Invisible peeling with no residual, dispel ling the spot, whitening skin professional.

2009.10.17 是郑州的又一次美博会，我公司特别组团去参展，主要产品是美白产品：&美白天使&针对各种色素聚集型或分散型斑点进行淡化和消除，对黑色素沉积过多者进行色素还原，隐形换肤无残留，祛除斑点，专业美白肌肤。

Rehmannia glutinosa、 Alisma orientalis Juzep、 Cyathula officinalis Kuan via systematic solvent-extraction process and silica column chromatography.Fluorescence assay was chose as a method of screening 5α-reductase inhibitor, based on its veracity and precision compare with absorbency measure.

采用系统溶剂提取车前子、熟地黄、泽泻、川牛膝等中药材，并用硅胶柱层析初步分离提取物，建立了用于筛选5α-还原酶抑制剂与DU145细胞生长抑制剂的天然药物初步分离提取库。

The results show that the ethyl acetate extract of Alpinia oxyphylla Miquel possesses strongest DPPH radical scavenging activity and reducing power in a concentration-dependent manner.

在还原能力、清除DPPH自由基和羟自由基方面，乙酸乙酯提取物表现出了很强的抗氧化能力，呈现剂量依赖关系。

The XRD results indicate that the iron oxides are transformed into metallic iron, most of the aluminiferous mineral and silicic mineral reacts with the sodium sulfate during the reduction roasting and forms sodium aluminosilicates, which enter into the nonmagnetic materials during the magnetic separation, then Al-Fe separation is realized.

XRD研究结果表明，在钠盐焙烧过程中，铁氧化物被还原成金属铁，大部分铝、硅矿物与硫酸钠反应生成非磁性物质铝硅酸钠，经磁选后进入非磁性物，从而实现铝铁的高效分离。

In this test, two new processes are studied on preparation strontium by the vacuum aluminothermy reduction and Al-Sr alloys by molten salt electrolysis.

本文研究了真空铝热还原法生产金属锶和熔盐电解法生产铝锶合金的两种新工艺。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。