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The reaction of α-hydroxyketone with Michael acceptor nitroalkene.was studied. After many experiments, we then found that in the presence of Zn2 and cinchonine, the α-hydroxyketone could successfully react with nitroalkene. Under our optimized condition, we gained the 95% yield of product with the ratio of syn : anti of 3:1 and 72% ee value for syn-product.

有机碱作用下α－羟基酮对硝基烯烃的加成反应研究研究了α－羟基酮类化合物与Michael受体硝基烯烃类化合物的反应，通过分析和实验发现在Zn2和辛可宁的作用下α－羟基苯乙酮能够与硝基烯烃化合物顺利反应，在优化的条件下以95%产率和3：1的Dr主要得到顺式产物，其中顺式产物的ee值最高为72%。

Several aspects of the method, such as crucible treatment, mass of sample, cineration condition, analysis method, calibration graph and ionization depressor dosage were improved and optimized.

对实验中坩埚处理、试样量、灰化条件、分析方法、工作曲线及电离抑制剂用量等技术条件进行了优化。

Put forward the circle shifting optimized method on the transverse filter and extent to the equalizer.

针对横向滤波结构，提出了循环移位的优化方法，并推广到均衡器的应用中。

On the basis of mode conversion theory, this paper further optimized a better dimension and obtained the regulation about the radius of the circular waveguides, curvature and frequency of bent circular waveguides and the bandwidth.

在模式耦合理论的基础上，优化出了比较好的几何结构，并发现了圆波导半径、弯曲圆波导曲率和频率以及频带宽度之间的变化规律。

With the interpolation principle of high precision multi-layered neural network, a closed-loop control method for swing-up process of circular rail inversed pendulum is investigated based on the optimized open-loop control law.

摘要在圆轨倒立摆摆起过程开环控制律优化算法的基础上，应用高精度多层人工神经网络插值原理，研究了摆起过程的闭环控制方法。

MIP and NIP were used as a solid-phase adsorbent, respectively. The type and amount of the eluting agent were optimized. The recoveries of standard addition are in the range of 86.7%~ 97.7%, with precision of 1.2%~ 3.8%. It has provided reference for the determination of citrinin.

两者分别作为固相吸附剂，通过洗脱剂种类和用量等优化后，在大米的加标回收实验中，样品的加标回收率在86.7%~97.7%之间，相对标准偏差在1.2%~3.8%之间，得到了比较理想的回收率，为桔青霉素的检测提供了参考。

In order to meet the higher requirements of the market, the steeping techniques must be further optimized in claret production.

提出了为满足市场的更高要求，必须进一步优化红葡萄酒的各种酿造工艺。

Had then " claver search engine is optimized " series.

于是有了《闲话搜索引擎优化》系列。

Draft outline," claver search engine is optimized " piece when writing an in part, caustic friend sends an old article: The key word layout of SEO lecture, density, dependency reachs changeover.

草拟完提纲，《闲话搜索引擎优化》的开篇写了一半的时候，损友发来一篇旧文：SEO讲座之要害字布局、密度、相关性及转换。

By the industrial test, the improved clinker and cement has been produced under the optimized conditions.

通过工业试生产，获得了改进的熟料和水泥。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。