对苯二酚

Mandelic acid is of particular benefit in those with darker complexions, where hyperpigmentation may occur with ingredients such as hydroquinone or glycolic acid.

扁桃酸是特别有益的，在那些黑暗的complexions ，色素沉著，可能会发生与成分，如对苯二酚或乙醇酸。

The technology of calcium-removing in the production of high-purity manganese carbonate is studied in which the manganiferous waste water from the production of 1,4-dihydroxy benzene is as raw material.

研究了以对苯二酚生产中副产含锰废水为原料，生产高纯碳酸锰的除钙工艺。

In a word, with the manganiferous waste water produced from the manufacture of 1 ,4-dihydroxy benzene as raw material, preparation of high-purity manganese ~ carbonate is feasible in technicality, reasonable in process and considerable inAeconomic benefit.

总之，以对苯二酚生产中副产的含锰废水为原料，生产高纯度碳酸锰在技术上是可行的，工艺上是合理的，经济效益是可观的。

Hign-purity manganese carbonate from the manganiferous waste water was produced from the manufacture of 1,4-dihydroxy benzene, especially the preparations from waste water containing plenty of natrium and sulphate were studied.

以对苯二酚生产中副产物含锰废水为原料，研究了生产高纯碳酸锰时除杂质钠盐与硫酸根的工艺，并研究了影响杂质含量的诸因素，如温度、锰离子浓度、加料方式等。

The antioxidant activity of the lipid-soluble epigaliocatechin-3-0-gallate-4'-myristate in soybean salad oil were investigated and compared in AOM test. Results: The results demonstrated that the antioxidant activity of the single-substitution EGCG myristate was almost corresponding to TBHQ.

结果：该脂溶性的EGCG衍生物为长碳链单取代的儿茶素－表没食子儿茶素－3-0-没食子酸－4'-肉豆蔻酸酯，在大豆色拉油中的抗氧化活性与叔丁基对苯二酚相当。

The experiment results showed that the optimum reaction condition were as follow: concentration of H_(2)SO_(4) was 0.5 mol/L, calcinations time were 4 h at the temperature 550℃, the molar ratio of acrylic acid to octadecyl alcohol was ...

丙烯酸十八酯的优化工艺条件为：丙烯酸与十八醇的摩尔比为1.2，固体超强酸及对苯二酚的用量分别为6%、0.8%，反应温度为120℃，反应时间为3 h。在此反应条件下，酯化收率可达97%。

The experiment results showed that the optimum reaction condition were as follow: the molar ratio of acrylic acid to octadecyl alcohol was 1.2:1, the amounts of solid super acid and hydroquinonone were 6.0% and 0.8% respectively, reaction temperature and time were 120℃ and 3h. In this condition, the percentage of esterification of octadecyl acrylate was 97%.

由实验得出的最佳合成条件是：丙烯酸与十八醇的摩尔比为1.2：1，固体超强酸及对苯二酚的质量分数分别为6%，0.8%，反应温度为120℃，反应时间为3 h，在此反应条件下，酯的产率可达97%。

The production was further verified with IR.The experiment results showed that the optimum reaction condition were as follow:the molar ratio of acrylic acid to octadecyl alcohol was 1.2∶1,the amounts...

由实验得出的最佳合成条件是：丙烯酸与十八醇的摩尔比为1.2∶1，固体超强酸及对苯二酚的质量分数分别为6%，0.8%，反应温度为120℃，反应时间为3 h，在此反应条件下，酯的产率可达97%。

The CAWs, graphite and mineral oil were directly mixed to make the CAW modified carbon paste electrode and the electrocatalysis of the modified electrode to hydroquinone was studied.

用直接混合法制备了碳原子线修饰碳糊电极，并研究了对苯二酚在该电极上的电化学行为。

Compared with the bare carbon paste electrode, the anodic peak potential shifted negatively by 0.152V and the cathodic peak potential shifted positively by 0.161V for CVs of hydroquinone on the CAW modified carbon paste electrode. The reversibility of the reaction became obviously better, showing the high electrocatalytic activity of CAWs to electrochemical oxidation of Hydroquinone.

与未加碳原子线的空白碳糊电极相比，碳原子线修饰碳糊电极可使对苯二酚的氧化峰负移0.152V，还原峰正移0.161V，ΔEp减小了0.313V，反应的可逆性明显变好，说明该电极具有较高的电催化活性。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷