查询词典 at a rate of

As well as activity was exhibited. Theaddition of cinchonidine led to a remarkable increase in the reaction rate, as confirmed bythe IR study that the modifier activates the carbonyl groups of the reactant through itsquinuclidine nitrogen. On the contrary,〓 exerted a strong inhibition effect on theenantioselective hydrogenation. Chapter 3 Finely dispersed polyvinylpyrrolidone-stabilized iridium andbimetallic clusters were prepared by the alcohol-water reduction method.

第三章 采用醇水还原的方法制备了聚乙烯基吡咯烷酮稳定的铱纳米簇及双金属纳米簇，对丙酮酸甲酯的催化氢化表明，在铱金属簇催化体系中，辛可尼定不仅诱导了一定的对映选择性，同时对反应活性有明显的促进作用，平均反应速率可提高2-6倍。

Compared with prior art, the method of the invention carries out the cineration process under low temperature, so concave defects on the metal interconnection lines near the through hole during the cineration process under high temperature can be avoided, thus improving finished product rate.

与现有技术相比，本发明的制造方法通过在低温条件下进行灰化步骤，避免了因高温条件的灰化步骤造成通孔附近的金属互连线出现凹形缺陷的现象，从而提高产品的成品率。

This experiment showed that, in the experiment with varieties of stock, cion affinity was not strong, graft survival rate was not high, but increased the content of plant chlorophyll, photosynthetic capacity had been upgraded after grafting.

试验表明：所用的砧木品种与接穗的亲和力均不强，嫁接成活率不高，但嫁接后提高了植株的叶绿素含量，光合作用能力也有所提高，从而提高了甜椒的产量和品质。

This test used three capsicum varieties and two sweet pepper varieties, the stocks are capsicum, the cion are sweet pepper. This test studied that the rate of live grafting plants, growth, fruit quality and the impact of the management before and after grafting.

采用预试验中筛选出的2个辣椒品种为砧木，接穗是彩椒品种黄玛瑙，同时在预实验中还对砧木接种了根结线虫，试验研究了辣椒和甜椒嫁接的成活率、嫁接对植株生长发育和果实品质的影响以及嫁接前后的管理情况。

Results showed that the change of photosynthesis of the first whorl of leaves was similar generally between the stock and the cion, changing from leaf discolor, grey green, stable to senescent stages, and that the max net photosynthetic rate P(superscript max, photosynthetic saturated light intensity and chlorophyll content of the leaves changed continuously with the phenophases, which rose rapidly and then dropped slowly after the peak, whereas the change of their light compensation point was just the opposite.

结果表明，橡胶树籽苗芽接苗砧木和接穗第1蓬叶的光合特性变化规律基本相似，从变色期、淡绿期、稳定期，到衰老期，其叶片的表观量子效率、最大净光合速率P(下标 max、光饱和点和叶绿素含量等均随着物候期变化而不断变化，变化趋势为先迅速升高，达到最高值后缓慢下降；光补偿点的变化趋势则相反。

A more cohesive picture was established by 1980, with a similar rate of circa 65% apparent for the entire market.

一张更加言词一致的图片在1980 年以前建立了，以相似的率的大约65%明显为整个市场。

Objective To study the relationship between the circadian rhythm of blood pressure and the heart rate variability in elderly hypertensive patients.

目的 探讨老年高血压患者的血压昼夜变化与心率变异的关系。

The circuital convergence rate is improved with GA in neural network.

在神经网络中应用遗传算法提高网络的收敛速度。

It is well known that the multi-value CDMA spreading codes can be designed by means of a pair of mirror multi-rate filter-banks based on some optimizing criteria. The dissertation indicates that there exists a theoretical bound in the performance of its circular correlation property, which can be described by an explicit expression.

研究了基于两带镜像多速率滤波器组来设计的多值CDMA扩展码的方法，并推导出了基于这种方法设计的码序列在循环相关特性方面所能达到的极限，以及达到此理论极限时应满足的条件；在此基础上，提出了一种基于熵最大化准则来产生CDMA扩展码的设计方法。

First, it was to obtain two binary images from segmenting image by two thresholds. Second, erosion, opening and closing were done to the two images according to some knowledge of the shape and location of the objects in the image that we have already known. Last, the edge information from the image segmented by a high threshold was put into the image segmented by a low threshold. It is the way to segment and discern circular objects accurately from the complex image and can greatly improve the accuracy rate of discerning.

首先分别根据两个阈值进行分割得到两幅二值图像，然后根据目标是圆形以及其大致位置等先验知识分别对两幅图进行腐蚀，开启，闭合等数学形态学运算，将高阈值分割得到的图像中的边界信息叠加到低阈值分割得到的图像中，实现对复杂背景图像中圆形物体的准确分割与提取，解决了复杂背景图像中物体识别率低的问题。

The shaping method of noncircular part and the tool holder's radial motion characters in noncircular turning process are discussed in detail in the thesis.

论文详细研究了非圆零件的成型方法和加工过程中刀架的径向运动规律。

I have not really liked him,I do not like his this kind of disposition.

我没有真的喜欢他，我不喜欢他的这种性格。