查询词典 experimental method

The experimental method was adopted, and the standard steel wire sample and ruler sample were utilized. Firstly determine approximately the position of projection center by adopting the method of DR imagery, and then approaches the accurate position by means of point of golden section.

采用实验的方法，利用标准钢丝样本和直尺样本，先采用DR成像的方法大致确定投影中心的位置，然后利用黄金分割点逼近准确位置。

By means of photo elastic experimental method and finete element method, two inevitable problems in the application of a FMB— the determination of optimum groove depth and strain gauge distributing pattern—have been solved successfully.

通过应用光弹性实验方法和有限元分析方法，分别解决了在测力轴承应用中不可避免的两大问题—最佳布片沟槽深度和最佳布片方式的确定。

There is an immanent relation between rock dilatancy and confining pressure,the function of the relation is studied by theoretical method and experimental method,and it will be a guide for stability analysis and support design.

通过理论推导和试验分析得出和验证了岩石扩容与围压的关系函数，对稳定性分析和支护设计有较大的指导意义。

Objective To explore an experimental method of transfecting the marrow stromal stem cells with the reconstructed PGL3-transforming growth factor-β1 （TGF-β1） gene and to evaluate the feasibility of self-induction of MSCs to the chondrocytes in vitro so as to provide a scientific and experimental basis for a further ＂gene enhanced tissue engineering＂ research.

目的 探讨将编码细胞转化生长因子β1（transforming growth factorβ1，TGF—β1）的重组PGL3-TGF-β1质粒转染兔骨髓基质干细胞（marrow stromal stemceils，MSCs），体外通过自分泌、诱导作用向软骨细胞方向分化的可行性，为基因加强组织工程学修复软骨损伤提供体外实验依据。

In chapter three, various theories and experience on the dispersion of nano-powders proposed by former researchers were generalized and reviewed. Technical standards and experimental process for determining technological parameters were suggested for the dispersion of nano-scaled metal oxides in aqueous medium according to their surface wettability, surface charge, the dependence of surface charge on pH and the compatibility of surfactants with pH and pH adjusting agents. Based on these suggested standards and experimental method, highly stable and dispersive aqueous suspensoid of nm-ZnO, nm-TiO〓, nm-Co〓O〓 and nm-MnO powders were prepared successfully and surface modification on these nano-powders was also achieved.

本文第三章通过大量的文献调研，归纳总结了前人在纳米粒子分散技术方面的理论和经验，并在此基础上根据纳米氧化物粉体的表面润湿性、表面电性及其与分散介质pH值的关系、表面活性剂及其与pH调节剂的配伍关系设计了纳米氧化物水分散体系的工艺规范以及确定工艺参数的通用实验步骤，成功地制备了纳米氧化锌、纳米二氧化钛、纳米氧化钴和纳米氧化锰的高稳定分散悬浮液并实现了干粉体的表面改性，为纳米材料在氧化锌压敏电阻中的应用创造了第二个前提条件。

In this thesis, three major achievements were made in theoretical study: conditions and rules for preparing nano-powders by chemical precipitation are analyzed from the point of view of thermodynamics and kinetics, the principle, standards and experimental method for the aqueous dispersion of nano-scaled metal oxide powders were proposed and verified, mathematical model of nano-filming addition of dopants by chemical coprecipitation was established. In experimental research, nm-ZnO, nm-Bi〓O〓, nm-Co〓O〓 and nm-MnO powder with spherical shape, narrow particle size distribution and small particle size were prepared successfully, highly stable and dispersive aqueous suspensoid of nm-ZnO, nm-TiO〓, nm-Co〓O〓 and nm-MnO powder were prepared successfully and surface modification on these nano-powders was also achieved, 0-3 nanocomposite ZnO varistors with nm-ZnO, nm-TiO〓and nm-MnO respectively were prepared successfully by conventional mechanical attrition, and exhibited much better electrical properties than those of conventional varistors.

综上所述，本文在理论研究方面取得了三项成果：（1）从热力学和动力学角度推导并分析了液相化学沉淀法制备纳米粉体的反应条件和规律，（2）提出了纳米氧化物的水分散体系的设计原理、规范和通用实验步骤，（3）提出了共沉淀的数学模型和计算方法；在实验方面所取得的成果有：（1）成功制备了粒度小、分布窄、形貌对称的纳米氧化锌、纳米氧化铋、纳米氧化钴和纳米氧化亚锰，（2）成功地制备了纳米氧化锌、纳米二氧化钛、纳米氧化钴和纳米氧化锰的高稳定分散悬浮液并实现了干粉体的表面改性，（3）成功地进行了纳米氧化锌、纳米二氧化钛和纳米氧化锰对压敏电阻的0—3复合掺杂实验，试样性能远优于常规压敏电阻，为实现压敏电阻的高能高压化提供了新的方法和思路。

In this article the catalytic spectrophotometric back titrimetry for determining trace manganese was studied,best experimental conditions were selected and experimental method was established.

本文研究了催化光度返滴定法测定微量锰的原理，找到最佳实验条件，确立了实验方法。

The experimental results showed that the reproducibility of Washburn dynamic equation to study the wettability of wastewater treatment filter media was good and the experimental method was feasible.

用Washburn动态法研究了核桃壳、磁铁矿和陶粒砂滤料的亲油亲水性，并对其表面结构进行了表征。结果表明，用Washburn动态法研究水处理滤料润湿性的实验重复性较好，实验方法可行。

This research was conducted under the standard experimental method,"nonequivalent pretest-posttest control group design", sampling from two third grade classes in Xing-xing elementary school in Taipei County as experimental class and control class respectively.

本研究旨在依据Williams创造思考教学模式，发展国小自然科教材设计，并经八周共32节的实验教学后，以探讨威廉斯创造思考教学模式教材设计对国小学生创造力认知、情意及自然科学业成就之影响。

Based on our findings,we discuss the potential experimental consequences and provide the theoretical support to one experimental method for the synthesis of BN tubes.

我们的研究结果对于现有的一种合成硼氮纳米管的实验方法提供了可靠的理论依据，因而有着重要的实际意义。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。