实验

And the direction query efficiency based on multi-approximate index is compared with that based on taditional external approximation index. 2 The algorithms of nearest neighbor and reverse nearest neighbor about point, line and ploygen based on multi-approximate index are proposed after the virous methods of distance measure are discussed in detail. And the query efficiency of NN and RNN based on multi-approximate index is compared with that based on taditional external approximation index. 3 The basic concept of semi-join and the strategy of distance-direction semi-join are introduced. And the model of distance relationship, direction relationship and the bounding for spatial object are discussed. Then the method is presented about how to implement the query of distance-direction semi-join, and the efficiency of the algorithm based on multi-approximate index is compared with that based on taditional external approximation index.

即：1在方向关系矩阵模型、开域方向模型基础上，讨论了基于多重近似索引下的定性与定量方向检索方法，并通过实验对基于多重近似索引与外部近似索引下的方向检索效率进行了对比分析；2详细讨论了各种距离度量方法，提出了基于多重近似索引下的点、线、面的最邻近查询和反最邻近查询算法，并通过实验对基于多重近似索引与外部近似索引下的最邻近查询和反最邻近查询效率进行比较分析；3介绍了半连接的基本概念，探讨了距离关系、方向关系以及空间对象数量的约束模型，给出了基于多重近似索引下的距离方向半连接实现方法，并通过实验对基于多重近似索引与外部近似索引下的距离方向半连接的效率进行了比较分析。

The results of the effect on HSV-2 virulence experiment and the sample-canceling experiment showed that the four sulfated oligosaccharides had no virucidal activity to HSV-2 but inhibition activity.

初步探讨了低聚糖硫酸酯的抗病毒作用机制，由不同时间加药实验结果推测四种低聚糖硫酸酯具有类似的作用机制，可能作用于HSV-2与细胞的吸附阶段，不能抑制病毒在细胞内的复制过程；低聚糖硫酸酯的作用对象为病毒；对病毒毒力的影响实验和撤药实验说明四种低聚糖硫酸酯不能杀灭HSV-2，仅起抑制作用。

The Company has become the large-scale high and new science technology enterprise that can produce 5 kinds 9 serious and more than 260 specification of manifold tester, large-scale electrical weighing apparatus, force standard machine, force measure and weighment sensor and universal machine.

天水红山实验机有限公司：是我国实验机行业的大型骨干企业，具有完善的产品开发研制机构和全行业唯一的省级计量检测中心，公司成为生产多种实验机、大型电子衡器、力标准机、测力及称量传感器、通用机械等5大类9个系列260多个品种的高科技企业，&红山品牌&具有较高知名度。

The fourth part, the students are carried on the questionnaire survey on zetetic experiment knowledge and the skill grasping situation, the formation situation, emotion manner and the values formation situation.

第四部分，对学生探究性实验知识与技能的掌握情况、学生实验探究能力的形成情况、学生对化学实验情感态度与价值观的形成情况进行问卷调查。

The two white-skin animals are suit for research of zoopery of increased-pigment disease, while the other two are suit for research of zoopery of reduced-pigment disease; and α-MSH is one of the most important indicators in the research of zoopery with pigment disease.

结论］白色昆明小鼠及白色FMN豚鼠适宜做色素增加动物实验研究，C57BL/6J小黑鼠及棕黄色HARTLY豚鼠适宜做色素减退动物实验研究；α-MSH可做为观测色素代谢障碍性疾病动物实验研究的一个重要指标。

On medical examine courses, we have a variety of experiments: anatomizing animals, bio-chemical experiment, and phlebotomizing.

每天我们的课程不多，学习医学检验我们有很多的实验课，实验课很丰富，有解剖动物，生化实验，静脉取血。

The coking and deactivation process of benzene and ethylene alkylation reaction over AB-97 zeolite has been studied systematically. The results of acceleration deactivation reaction indicate that deactivation process go through three phases, high level activity stability period, activity decline period and low level activity stability period. The mechanism of this phenomenon was analyzed by the way of the experiment research of pore structure and acid quality of coked zeolite. It is concluded that reducing the strong acid active centers and crystal outer-surface active centers are benefit to improve the activity stability of zeolite.

在AB-97型分子筛催化剂上对苯/乙烯烷基化制乙苯反应体系的结焦失活历程系统实验研究，催速失活实验结果表明失活历程经历高水平活性稳定期，活性衰退期和低水平活性稳定期三个阶段，并通过对失活催化剂的孔结构及酸性质的实验研究，对这一现象进行了机理分析，认为催化剂改性研究中采用降低强酸活性位和晶粒表面活性位这两种手段都有利于改善催化剂的活性稳定性。

It analyses the problems existing in the physics experiment research teaching in senior high school and the requirements of the development and change of the teaching materials from both the teachers and the students aspects, brings out the principles and design thought of the research teaching in senior high school Physics experiment teaching, and thus conceptualizes the physics experiment research teaching and learning model.

从学生方面和教师方面分析了高中物理实验教学中存在的问题及教材的发展变化的要求，提出了高中物理实验教学中实施探究教学的原则及设计思想，从而构想了高中物理实验探究教学模式。

Through the comparison of different conditions in multi-angle repeated test, we observe the disaccording path of risk preferences. The main content of this thesis are as follows. Firstly, we design 2 sessions of experiments to find the impact of the softening budget constraint and the form of endowment on the risk preference. Besides, this thesis also includes several experimental comparative studies, focusing on the dynamical inconsistency of risk preference as well as its drifting path.

主要包括：首先设置预算软约束与风险偏好基础实验，考察影响投资者决策的主要因素，观测预算约束的软化和初始禀赋形式，对投资者预期及风险偏好的影响；其次，设置多期平面投资下的风险偏好实验，考察风险偏好是否存在着动态不一致现象，以及不同被试者的风险偏好漂移路径；最后，设置动态追加投资下的风险偏好实验，观测沉没成本、及与预算软约束的双重作用对风险偏好动态变化的影响。

The calculation results are compared with the experimental data available. The results indicate that the formation enthalpies by Miedema theory are correct.

计算结果同实验结果对比表明，计算值同实验结果总的趋势正确，尤其在La质量分数低于30％时实验结果与计算结果吻合比较好。

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。