查询词典 sound system

Then, it studies the supply chain management system as a complex system to confirm the state existing during operating of the system. After that, it conducts a probability analysis on the state which the system located by applying supplement variable method, and establishes the model of distributed parameter system in a form of partial differential equations. Combining C0 ? semigroup theory in the functional analysis, it conducts a dynamic analysis on the established mathematical model. Using this method, it obtains the mathematical expression of the dynamic solution and the steady state solution, and proves the uniqueness, non-negativity and the asymptotic stability of the system solution. This dissertation applies the Matlab tool and uses two-step, three-step Simpson integral equation to imitate the condition of system solution. Then, it adds possible mode of failure and the optimization adjustment state to the system, based on which it has established the distributed parameter system model which is described by partial differential system of equations. Combining the functional analysis C0 ? semigroup theory, it studies the established mathematical model, and obtains the mathematical expression of the dynamic solution system and the steady state solution. It has proven the existing of uniqueness of the system solution, the asymptotic stability of system solution and the system solution. In addition, it has lying the theory rationale for further analysis and the research on the optimization of system.

本文首先简要综述了供应链理论、可靠性研究、鲁棒性研究以及供应链鲁棒性研究的现状；然后，将供应链系统作为一个复杂系统来分析，确定了系统运行过程中所经历的状态，通过引入补充变量的方法，建立了用偏微分方程组描述的分布参数系统模型，用泛函分析中的C_0 -半群理论得到了系统动态解和稳态解的数学表达式，证明了系统解存在的唯一性、非负性和指数阶渐近稳定性；并借助Matlab工具，利用二阶、三阶辛普森积分方程模拟系统解的性态，并给出系统动态解的仿真图；本文又对上述系统增加了系统可能失效状态和优化调整状态，并在此基础上建立了用偏微分方程组描述的分布参数系统模型，同样用泛函分析中的C_0 -半群理论对所建立的数学模型进行了研究，得到系统动态解和稳态解的数学表达式，证明了系统动态解存在的唯一性、非负性及渐近稳定性，为进一步分析和研究供应链优化奠定了理论基础。

On the aspect of error compensation, the system using the geometric average sound pressure instead of the arithmetic average sound pressure to get the sound pressure of the measurement point. This method not only reduces the high frequency error in the sound intensity measurement, which compensates the finite difference approximation error, but also greatly reduces the computation of the sound pressure spectrum.

误差补偿方面，课题采用几何平均声压代替通常的算术平均声压来计算双传声器法的声场声压值，这样不仅可以有效的减少声强测量中的高频误差，对有限差分误差起到了补偿作用，而且还大大减小了声压谱计算中的计算量。

Automotive parts, components, engine system, chassis system, braking system, driving system, steering system, vehicle body system, transmission system, exhaust system, automotive accessories, general parts, fasteners, standard parts and sealing parts; automotive motors, bearings, clutch, transmission gear, SRS, glass, batteries, friction materials, chains and skid chains; automotive air conditioner; automotive lamps; automotive tires and rims; automotive paints, lubricants, oil and additives; automotive refitting components and articles; automotive articles; automotive electronics, electrics and instruments; automotive sound and audio-video system; automotive navigation and vehicle-carried communication system; automotive safety and antitheft system; automotive maintenance equipment and tools; automotive parts manufacture equipment, materials and tools; automotive manufacture technology and machinery; new automobiles; energy saving, environment protection and new energy technologies and products; related medias, accreditation, finance and insurance organizations, clubs and after-sale services.

汽车零部件、零配件，发动机系统、底盘系统、制动系统、行驶系统、转向系统、车身系统、传动系统、排气系统、散热冷却系统、燃油系统，汽车附件、通用件、紧固件、密封件、摩擦材料，汽车电机、轴承、蓄电池、滤清器、散热器、消声器、传感器、仪器仪表、雨刷器、变速器、离合器、离合片、刹车片、汽车弹簧、减震器、保险杠、安全气囊、座椅、玻璃、车镜、车用空调、车灯、轮胎、轮毂、链条、防滑链，汽车线束、插接器、硬管、软管、软轴、拉索，车用纺织品，汽车油漆、润滑油、机油、添加剂，汽车用品，汽车电子电器，汽车音影、导航、车载通讯、安全和防盗系统，汽车改装部件及用品，汽保设备及工具，汽车零部件制造技术、设备、工具及材料，汽车零部件清洗设备及包装，汽车新产品，汽车节能环保与新能源技术及产品，相关软件、媒体、认证、金融和保险机构等。

Automotive parts, components, engine system, chassis system, braking system, driving system, steering system, vehicle body system, transmission system, exhaust system, automotive accessories, general parts, fasteners, standard parts and sealing parts; automotive motors, bearings, clutch, transmission gear, SRS, glass, batteries, friction materials, chains and skid chains; automotive air conditioner; automotive lamps; automotive tires and rims; automotive paints, lubricants, oil and additives; automotive refitting components and articles; automotive articles; automotive electronics, electrics and instruments; automotive sound and audio-video system; automotive navigation and vehicle-carried communication system; automotive safety and antitheft system; automotive maintenance equipment and tools; automotive parts manufacture equipment, materials and tools; automotive manufacture technology and machinery; new automobiles; energy saving, environment protection and new energy technologies and products; related medias, accreditation, finance and insurance organizations, clubs and after-sale services.

汽车零部件、零配件，发动机系统、底盘系统、制动系统、行驶系统、转向系统、车身系统更多。。。汽车零部件、零配件，发动机系统、底盘系统、制动系统、行驶系统、转向系统、车身系统、传动系统、排气系统、散热冷却系统、燃油系统，汽车附件、通用件、紧固件、密封件、摩擦材料，汽车电机、轴承、蓄电池、滤清器、散热器、消声器、传感器、仪器仪表、雨刷器、变速器、离合器、离合片、刹车片、汽车弹簧、减震器、保险杠、安全气囊、座椅、玻璃、车镜、车用空调、车灯、轮胎、轮毂、链条、防滑链，汽车线束、插接器、硬管、软管、软轴、拉索，车用纺织品，汽车油漆、润滑油、机油、添加剂，汽车用品，汽车电子电器，汽车音影、导航、车载通讯、安全和防盗系统，汽车改装部件及用品，汽保设备及工具，汽车零部件制造技术、设备、工具及材料，汽车零部件清洗设备及包装，汽车新产品，汽车节能环保与新能源技术及产品，相关软件、媒体、认证、金融和保险机构等。

The results showed that,the sound pressure level increased significantly when narrow transverse groove was used;the effect of speed on the sound pressure level was greater than loading;the noise of S-shaped straight groove was lower,and the difference of sound pressure level between positive and negative rotation was small;the sound pressure level of 15° oblique groove was higher than 0° and 15° alternate groove,but the difference of sound pressure level between positive and negative rotation of 0° and 15° alternate groove was bigger.

结果表明，无论加刻什么类型的横向细沟槽，声压级都大幅升高；速度对声压级的影响程度大于负荷；在3种类型的横向细沟槽中，S形直沟槽噪声较小，且正、反转时声压级差异小；15°斜沟槽声压级较0°与15°交替排列沟槽略高，但0°与15°交替排列沟槽的正转和反转声压级差异较大。关键词：轮胎；轮胎噪声；胎面花纹；横向细沟槽中图分类号：TQ336.1；TB533+。2文献标识码：B文章编号：1006-8171(2009)

Software Description: About Sound Effect Maker, Create sound effects for sound files with Sound Effect Maker. The program supports sound effects such as chorus, compression, distortion, echo, flange, gargle, parametric equalizer and reverberation.

Sound Effect Maker 可以为声音文件创造各种不同的效果，软件支持诸如合唱，失真畸变，回声，边缘，gargle，参数的均衡器和 reverberation。

Human brain function similar to the central processing unit installed on the motherboard on the above, it has a superhuman memory and rapid calculation function of precision, it can be scheduled in accordance with the procedures for people to not hesitate to complete the instruction, as well as network traffic as the memory, it can provide more paths and channels to the computer, the faster the computer more efficient, to let the computer voice would also like to assemble a deal with the sound card sound files, as the screen reader software At the same time, prompted the need for sound playback, sound card, therefore the request is relatively high, the best selection of full-featured dual-channel sound card.

类似人脑功能的中央处理器就安装在主板上面，它具有超人的记忆能力和精确快速的运算功能，它能够按照人们预定的程序毫不犹豫地去完成各项指令，还有就象交通路网的内存，它能够提供更多的路径和通道给计算机，使得计算机的运算速度更加快捷，要让计算机能够发出声音还要装配一个处理声音文件的声卡，由于读屏软件所需要同时播放提示声音，因此声卡的要求比较高，最好选用功能齐全的双声道声卡。

The minimum fluidization velocity has a minimum value when the frequency of sound waves is 120Hz and it will decrease as the sound pressure level increases. The degree of sound attenuation will increase while bed material is higher and the fluidization quality of fine particles will become poor and the minimum fluidization velocity will increase. Compared with TiO2, the SiO2 fine particles have a better quality of fluidization at the same fluidized conditions.The cluster/subcluster model and oscillators model are used to describe the fluidization characteristics of fine particles in a sound-assisted fluidized bed. The theoretical calculations show that the minimum fluidization velocity umf is decreased with the SPL increased at the same frequency of sound and the quality of fluidization is better.

论文还系统的考察了声压和频率对纳米SiO2和TiO2颗粒流化特性的影响，结果表明：在频率一定的情况下，声压越高，流化床中形成的聚团尺寸越小，最小流化速度越低，流化质量越好；当声压低于120dB时，声场对超细颗粒流化特性的影响减小，当声压大于130dB时，则能显著改善流化效果，使流化床内的颗粒聚团明显减小，最小流化速度明显降低，粉体带出减小；声压一定，频率为120Hz左右时，最小流化速度最低，此时流化床中形成的聚团尺寸最小，流化效果最好；超细颗粒达到较好的流化状态存在一个最佳频率范围，随着声压增高，这个频率范围将增大。

The widely-accepted classification of sound symbolism is the one made by Hinton, whose four categories are corporeal sound symbolism, imitative sound symbolism, synesthetic sound symbolism and conventional sound symbolism.

然而，音义学的研究成果不但不能否定任意性的地位，反而强有力地证明了任意性和象似性在语言符号中的互动关系。

First the feathers of vehicle hydraulic shock absorber vibration and sound is synthesized detailedly, classified as abnormal sound of friction attack, abnormal sound of resonance, abnormal sound of flow cutting and abnormal sound of gas.

首先对车辆液力减振器的振动噪声的特点进行了较为详细的分类和归纳总结，减振器异响分为：摩擦撞击异响、共振异响、截流异响和气体异响。

As of Tuesday, Google's results were still censored in China.

截至周二，谷歌的搜索结果仍受中国审查。

In order to make the positive action increase and negative one decrease, the sub-forces of the social factors must be adjusted to form a centripetal force.

在这一过程中，人的主体性发挥是社会有机体健康发展的灵魂。