查询词典 oxidation-reduction

Melanin from cheese and other food contained tyrosine, in the body under the action of enzymes, tyrosine into DOPA and then oxidation, the final polymerization into melanin.

黑色素来源于奶酪等食物内所含的酪氨酸，在体内酶的作用下，酪氨酸转化成二羟苯丙氨酸，然后氧化，最后聚合成黑色素。

Vitamin C can interrupt the process of melanin production could have been generated to prevent further oxidation of DOPA ammonia was reduced to dopa, and can reduce serum levels of copper oxide, affecting the activity of tyrosine plum, thereby interfering with the biosynthesis of melanin, if the want to make the skin and fair complexion, we might eat more foods rich in vitamin C such as tomatoes, oranges, lemons, hawthorn, citrus and so on.

维生素C能中断黑色素生成的过程本来是可以防止的多巴氨进一步氧化减少到多巴，并能降低血清铜氧化，影响酪氨酸梅的活性，从而与黑色素的生物合成，如果干扰是想使皮肤白皙，我们可能会吃更多的食物含有丰富的维生素C，如西红柿，橙子，柠檬，山楂，柑桔等。

Kiwi was able to play whitening, freckle role is one of the reasons for vitamin C can effectively inhibit skin dopa quinone oxidation, so that the skin pigment dark oxidized into the reduced light pigments, interference with the formation of melanin the prevention of pigmentation in order to maintain fair-skinned.

猕猴桃之所以能够起到美白、祛斑的作用，原因就是其中的维生素C能有效抑制皮肤内多巴醌的氧化作用，使皮肤中深色氧化型色素转化为还原型浅色素，干扰黑色素的形成，预防色素沉淀，从而保持皮肤白皙。

The effects of reaction temperature ,reaction time and dosage of catalyst on the oxidation reaction were examined.

考察了反应温度、反应时间和催化剂用量对氧化反应的影响，找到适宜的氧化反应条件。

It can be presumed that acting point of salicylic acid is possible before oxidation of taxa-diene exocycle double bond.

因而推测柠檬酸钠的作用位点很可能在紫杉二烯环外双键氧化之前。

The construction of branched-chain sugar was carried out by hydroboration-oxidation of a double bond in the corresponding hexose.

通过相应的烯糖9的硼氢化-氧化反应构建了支链糖11，同时分离到一系列还原的副产物7c-e，通过X-射线晶体衍射确定了7c和7e新的手性中心的构型。

The gravure business card printing and membership card deposit produced very thick (intaglio business card printing and membership card making ink film thickness is 9-20 μm, lithography business card printing and membership card making ink film thickness is only about 4 μm), the oxidation of trabeculectomies impossible to achieve quick-drying purpose gravure printing ink most fast with high volatility of drying oil based ink.

而凹版制卡和会员卡制作的墨层又十分厚实（凹版制卡和会员卡制作墨膜厚度一般为9-20μm，平版制卡和会员卡制作墨膜厚度仅为4μm左右），单靠氧化结膜无法达到快干目的，所以凹印油墨大多数采用高挥发快干性油墨。

DEMS combined with the dual thin layer flow through cell is a good tool for the quantitative study on the oxidation of small organic molecules.

微分电化学质谱仪与双薄层流动电解池结合是一个很好的定量研究小分子有机物氧化的有力工具。

DEMS combined with the dual thin layer flow through cell was used to measure quantitatively the formation rate or amount of CO〓 and the consumption rate or amount of methanol during methanol oxidation.

本论文对一个新的双薄层流动电解池进行了表征。

From casting, squeezing, aging treatment, air blast quenching, cold quenching to anode oxidation, we could process duralumin constructions, and provide you all kinds of pipes, sticks and profiled bar for industry, transportation, electronic, radiator, decoration and civil us

从熔炼铸造、型材挤压、时效处理、风冷淬火、水冷淬火到阳极氧化等各车间工序，可为您加工生产铝合金建筑、工业、交通、电子、散热器、装饰、民用等多种规格及状态的管、棒、异型材。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。