查询词典 resonance method

Using the one-atom theory, the electronic structures of Pt-electrocatalyst with fcc structure was determined as follows:(5dn)6.48 (5dc)2.02 (6sc)1.48(6sf)0.02. Compared to the result obtained by the first-principle method such as FP-LMTO, CASTEP, their results are in good agreement with each other. Comparing the calculations of physical properties such as lattice constants, cohesive energy and bulk modulus by OA method and first-principle method, the result obtained by OA method is in excellent agreement with experimental value, but the result obtained by first-principle method is not accordable. The relationship between the electronic structures and catalytic performance was explained qualitatively by OA method and first principle method according to its electronic structures. Because the d-orbital vacancies increases and static density is high around Fermi energy band, Pt has good catalytic performance.

摘 要：依据纯金属单原子理论确定面心立方结构电催化剂Pt的电子结构为(5dn)6.48(5dc)2.02-(6sc)1.48(6sf)0.02，与采用第一原理的FP-LMTO和CASTEP等方法所计算的电子结构相比较，其结果非常相近；由OA理论和第一原理方法计算的晶格常数、结合能、体弹性模量等物理参数进行比较，OA理论计算的结果与实验值较符合，而第一原理方法计算的结果与实验值相差较大；在此基础上用OA理论和第一原理方法研究了Pt的电子结构与催化性能的关系，由于d带空穴增多和费米能级附近态密度较高，导致金属Pt的催化性能很好。

This chapter principally recommends Tuitional Method, Conversational Method, Discussional Method, Demonstrating Method, Exercise Method, Discoverable Method, and Scene Method. These groovy methods are usually practiced in general specialty, butwhat attracts us is how these methods adopted and used for the reference in the music teaching practice.

主要介绍一些曾经在音乐教学中被采用和借鉴的一般学科所共用的常规教学方法，包括讲授法、问答法、讨论法、演示法、练习法、发现法、情景法七种方法。

This chapter principally recommends Tuitional Method, Conversational Method, Discussional Method, Demonstrating Method, Exercise Method, Discoverable Method, and Scene Method. These groovy methods are usually practiced in general specialty, but what attracts us is how these methods adopted and used for the reference in the music teaching practice.

主要介绍一些曾经在音乐教学中被采用和借鉴的一般学科所共用的常规教学方法，包括讲授法、问答法、讨论法、演示法、练习法、发现法、情景法七种方法。

In this study, with a total of 798 SOC density data and the 1:500 000 soil maps, the SOC storage in Yunnan-Guizhou-Guangxi Region of China (including Yunnan province, Guizhou province and Guangxi Zhuang Autonomous Region) was estimated using the soil type method with the soil type method with the linkage of arithmetic mean method, median method, and area-weighted mean method (based on the area recorded in the Soil Series) based on different map units and the results were compared with that of the linkage of PKB method (Pedological Professional Knowledge Based Method).

利用中国滇黔桂地区（云南省、贵州省和广西壮族自治区）798个土壤剖面及1：50万土壤图在不同的制图单元水平上，分别采用算术平均值法、中值法和面积加权平均值法（以土种志中的面积为权重）估算了该地区1 m深度SOC储量，并与基于土壤学专业知识连接方法(Pedological Knowledge Based Method，PKB)的估算结果进行了比较。

There are direct-acting identification method,jar or bottle identification method,steel tube identification method and hole identification method.Steel tube identification method and hole identification method are better than others method for forensic science,because these two methods have the higher credibility.

目前已经形成的警犬鉴别人体气味的方法有直接鉴别法、罐内或瓶内鉴别法、管式鉴别法和气孔鉴别法，由于管式鉴别法和气孔鉴别法的鉴别结果有较高的可信度，故被法庭科学认为是2种较好的鉴别人体气味的方法。

Magnetic Resonance Sounding is the only geophysical new method of directly detecting underground water at present. In this paper the main gains of taking part in the 2nd MRS international workshop are introduced, development and progress of hydroscope and applications of MRS method are considered. On the basis of the MRS successful application in the detection of underground water, using MRS method new progress has been made in slide monitoring of Three Gorges and archeology of the first Qin dynasty imperator mausoleum for the first time.

第二届核磁共振测深国际学术研讨会概况《第二届MRS在地下水勘查中的应用》国际学术研讨会2003年11月19日~21日在法国奥尔良召开。1.1 第二届MRS 研讨会的主题研讨会的主题是：对地表下含水层MRS响应模拟；数据处理和反演；野外工作对策；数据采集和质量控制方面的经验；MRS和其它地球物理资料的综合应用和解释；MRS资料的校正和确认问题；含水层几何形状和水动力学性质特征；开发MRS 方法的前景。

Three reference current detecting methods are presented for single-phase active power filter, i.e. fundamental current detecting method based on parallel resonance of passive LC filter, fundamental current detecting method based on switched-capacitor filter, harmonic current detecting method based on d-q transformation and its improved circuits.

同样通过采用并联变压器二次侧多补偿绕组的结构来提高有源电力滤波器的容量。4、提出三种单相有源电力滤波器指令电流的提取方法，即基于LC并联谐振的基波电流检测方法、基于开关电容滤波器的基波电流检测方法、基于单相d-q变换的谐波电流检测方法及其改进电路。

The phase of ω0 frequency fluctuates tempestuously. The resonance peaks of flexural and torsional vibrations response are present at 2/3ω0 1/2ω0 1/3ω0 and 1/4ω0 with three kinds cracked rotor models. Near 1/2ω0 frequency, quasi-periodic and chaotic motions maybe appear. Periodic, quasi-periodic and chaotic motions show on alternately when the rotating speed is near to 2/3ω0.Combined step-by-step integral method with traditional transfer matrix method, an increment transfer matrix method is put forward.

研究结果表明：各种故障情况下，华北电力大学博士学位论文弯振和扭振之间都存在祸合关系，但弯扭祸合振动一般不会威胁机组安全运行：在叶片丢失或滑环飞脱故障时，将产生很大的弯振，同时各转子扭振也将被激发出来，它以工倍频和前三阶固有频率为主；在各种电气故障情况下，各转子都很快被激励出较大幅值的扭振来，相应各转子弯振也发生一定的变化，但它的变化明显滞后于扭振，扭振和扭矩主要以前三阶固有频率为主。

In the fourth chapter , we studied the resonance light scattering spectral characteristic of patent blueⅤ- Cetyltrimethyl ammonium bromide-nucleic acid system, and the elementary reaction mechanism with absorption spectra method and 1H NMR spectra method. Another new determination method of nucleic acid at nanogram level was established.

第四章研究了五号专利兰-十六烷基三甲基溴化铵-核酸体系的共振散射光谱特征，并结合吸收光谱法、核磁共振光谱和一系列条件实验探讨了它们的作用机理，建立了一种测定纳克级核酸的新方法。

A detailed model of non-linear parametric excitation vibration coupling the stay cable and the girder, in which the static sag as well as the geometric non-linearity are considered, is proposed in this paper. Based on several numeric examples investigated by the Galerkin method composed with the integration strategy, several kinds of factors effecting stay cable parameter vibration are studied. Another parameter vibration model by the axial excitation is presented and the corresponding nonlinear equations are derived. The smallest excitation amplitude,the transient state and steady state resonance amplitudes, and the changing characteristics of the axial force are obtained by using harmonic balance method. According to numerical examples calculated by numerical integration method, the effects of the inner damping of the stay cables are investigated.

本文创新地提出了斜拉桥拉索-桥面耦合参数振动模型，推导了索-桥耦合非线性参数振动方程组，联合Galerkin法及数值积分方法，对各种特性的拉索进行了数值求解，得出了影响拉索参数振动的各种因素；提出了斜拉索受轴向端激励参数振动模型，导出了模型的非线性振动方程，使用谐波平衡法得出了产生参数振动需要的最小激励幅值、共振时瞬态及稳态的振动幅值及索拉力的变化特性，并用数值积分方法对实际斜拉桥拉索进行了计算，分析了拉索阻尼对参数振动的影响。

I was just taking her hand, to help her out of a car, and I knew it.

我只是握着她的手，扶她下车，但我知道这一切。

China and South Korea have excoriated Japan over its approval of new school books which they say whitewash the atrocities committed during Japanese occupation, and anti-Japanese protests have been held in Chinese cities. The lingering bitterness over Japan's past imperialism still threatens to mar relations between the big East Asian powers

中国和韩国强烈谴责日本通过新的中学历史教科书，他们认为这一教科书掩盖了日本在其占领期间所犯下的残酷暴行，反日抗议活动在中国数座城市发生，历史上日本帝国主义制造的痛楚无法被忘却，这有可能破坏东亚强国间的关系。