脉冲响应

Most of the sound field simulation focuses on researching the impulse response in closured sound field,and then calculates other sound parameters,due to various environment in outdoor sound field,there is less research.

大部分声场仿真侧重于在室内封闭声场的前提下研究声场能量脉冲响应，进而获得其他声学参数，而室外声场环境由于差别较大，考虑因素较多因此研究较少。

Experimental studies were conducted to investigate the effects of driving parameters,such as driving voltage and negative demagnetizing pulse,on the dynamic response performance of a three-way solenoid valve in the common-rail fuel injection system.

结果表明：提高驱动电压可以有效地提高三通电磁阀的动态响应性能；在不同驱动电压下，对于同一正向励磁脉冲都有一个最优的反向消磁脉冲，这时三通电磁阀的动态响应特性最好；驱动电压越高，最佳消磁脉冲越小，最佳消磁脉冲变化越缓慢。

All impulse responses can be exported in high resolution for use in convolution reverbs.

所有脉冲响应可以出口，在高分辨率的使用在卷积混响。

The impulse response implies that the algorithm has the abvantage of energy compensation and applicable for dip angle reflector imaging.

偏移算法的脉冲响应表明：逆时偏移算子具有良好的陡倾角地层成像能力与深层能量补偿能力。

Design of Infinite Impulse Response Filters by Frequency Transformations This work is produced by The Connexions Project and licensed under theCreative Commons Attribution License The design of a digital filter is usually specified in terms of the characteristics of the signals to be passed through the filter.

设计无限脉冲响应滤波器的频率变换这项工作是由连接项目和授权下theCreative署名许可设计一个数字滤波器通常是具体规定的特点，信号可以通过过滤器。

The NWPM uses the Mallows' theory of sample selection probability to design the weight coefficients according to the respective impulse response of FIR filter with the desired spectral response.

基于Mallows样本选择概率理论，由FIR滤波器的脉冲响应来获得伪中值滤波器加权系数，使其具有和FIR滤波器一样的频率选择特性。

Basing on the Monte-Carlo calculations of the detectors'responses to radiation and n/γdiscrimination ability, their radiation response properties are experimentally investigated on pulsedγrays, X rays from Z-pinch processes, n/X mixed radiation fields of the DPF neutron generator, electron beams of BEPC II Testing Beam Facility.

完成了探测器辐射响应、n/γ分辨能力的蒙特卡罗模拟计算，开展了探测器对脉冲γ射线、Z-pinch过程脉冲X射线、DPF装置脉冲中子/X射线混合场、BEPC II试验束装置脉冲电子束及国家串列加速器脉冲质子束的辐射响应实验研究。

Based on the study of scholars at home and abroad and from the point of theoretical and empirical study, this paper analyses the impact of foreign trade and FDI over China's business cycle using many econometric methods such as Unit Root Test, Co-integration Tests, Granger Test, Pulse-response Function and variance decomposition based on VAR model and draws the conclusion as follows:Firstly,there is a close relationship among foreign trade, FDI and business cycle. Foreign trade and FDI are the important transmission channel of the economic cycle. Secondly, the impact to economic fluctuation from foreign trade is greater than that of FDI. Thirdly, In the long time, there is fine interactive circulation among foreign trade, FDI and economic growth. When the short-term deviation from equilibrium happens, there is a self-balanced mechanism in the system.Fourthly,the active effect outweighs the negative effect which the foreign trade and FDI brings.

本文在国内外学者研究成果的基础上，从理论和实证两个方面，运用单位根检验、协整检验、格兰杰因果检验、基于VAR模型的脉冲响应分析及方差分解等计量经济学的方法，从比较的角度分析了对外贸易及FDI对我国经济周期波动的影响，得出结论如下：首先，对外贸易、FDI与我国经济的波动有着显著的关系，二者是传递经济周期的重要渠道；其次，对外贸易对我国经济波动的影响要大于FDI的作用；第三，长期看我国FDI、对外贸易和经济增长之间形成良好的互动循环，当系统短期内偏离均衡状态时，系统存在一个自我均衡机制；第四，对外贸易及FDI对我国经济周期波动产生的积极效应要远大于它所带来的负面效应。

It is known that hall, sound source and receiver can be considered as a linear timeinvariant system.

对厅堂中不同接收点上脉冲响应的测量是研究音质参量分布的有效方法。

The main research work of this dissertation is as follows: Based on the chemical reaction engineering theory and the nitrobenzene electroreduction mechanism, the plate and frame electrolyzer was designed and applied to the process of electroreduction nitrobenzene to p-aminophenol. This dissertation measured the residence time distribution data of the electrolyzer by means of the pulse response method and studied the rule of flow pattern along with the current capacity change. Under different conditions ,this dissertation studied the cyclic voltammetry properties of nitrobenzene on different electrodes by means of the dynamic cyclic voltammetry method and the electrode materials applied to the NB electroreduction have been selected primarily.Baseed on the results of cyclic voltammetry tests, this dissertation used p-electrode systems to measure the steady-state- polarization curves of nitrobenzene on different electrodes in H-type diaphragm cell, and obtained each primary factor s influence rule and the exchange current density value of each electrode.And then on the basis of the conclusions of fundamental researchs upword, the effects of influence factors on the the yield of p-aminophenol and the current efficiency,such as electrode material, current density, quantity of electricity circulated, nitrobenzene concentration . sulpuric acid concentration and so on, have been studied in detail in the systems of hign temperature , strong acidity and oxygen-poorthrough a series of electrolysis experiments in this paper.After all using Pb as anode Monel metal as cathode Dupont Nafion 417 cation-exchange membrane as membrane, this dissertation obtained the optimum technological condition: reaction temperature about 85C, current density 500A m-2, sulphuric acid concentration 20%wt.

论文的主要研究工作为：运用化学反应工程理论，结合硝基苯的电还原机理，设计出用于硝基苯直接电还原合成对氨基苯酚实验的板框式电解槽，并利用脉冲响应法测定了该板框式电解槽的停留时间分布数据，研究了流型随流量变化的规律；通过动态循环伏安法研究了硝基苯在不同电极上、不同条件下的循环伏安特性，初步评选出了用于硝基苯电还原的电极材料；结合循环伏安的测定结果，在H型隔膜电解槽中采用三电极体系测定了硝基苯在不同电极上、不同条件下的稳态极化曲线，得到了各主要因素的影响规律及硝基苯在各个电极上电还原的交换电流密度数值；在基础研究结论指导下，采用板框式电解槽，在高温、强酸、贫氧系统中，进行了一系列的电解实验，分别考察了电极材料、电流密度、通电量、硝基苯浓度、硫酸浓度等因素对收率及电流效率的影响，最终选择以蒙乃尔合金电极作为阴极、铅合金为阳极、Dupont Nofion 417阳离子交换膜为隔膜，得到由硝基苯直接电还原制对氨基苯酚的最佳电解工艺条件：反应温度85℃，电流密度500A·m~(-2)，硫酸浓度20％wt。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。