电声的

The output of electron acoustic signal in the ferroelectrics is calculated on the basis of their piezoelectric properties. The results show that the magnitude of electron acoustic signal not only related with beam currents, beam power and modulation frequency, but also with sample properties especially electric parameters such as dielectric constant and spontaneous polarization.

本文首次以典型的铁电BaTiO〓材料为试样，从其具有的压电性出发，推导了这类材料的电声信号理论表达式，结果表明电声信号的大小不仅与实验参数如入射电流、入射电子能量以及调制频率等有关。

The fiery harmonica wizard took the humble mouth organ in dazzling amplified directions that were unimaginable prior to his ascendancy.

正是这个火一样的口琴天才，把地位卑下的口琴乐器用电声的形式表现的无与伦比，史无前例！

A general form of Hamiltonian for vibronic Jahn-Teller systems is derived on the basis of adiabatic approximation and group theory. The electronic operators and active Jahn-Teller modes appeared in a vibronic system are also discussed.

本文基于绝热近似和群论导出了电声耦合系统的哈密顿量的一般形式，讨论了电声耦合系统中的电子算符和活跃的声子模式。

As a professional manufacturer of acoustic components, Wellsonic now supplies Unidirectional Electret Condenser Microphone, Omnidirectional Electret Condenser Microphone, Noise Cancelling Electret Condenser Microphone, Speaker, Receiver, Music Headphones, Phone Headset and Aviation Headset, etc. We can also accept OEM or ODM for our customers.

作为电声产品的专业制造厂商，公司目前提供单指向性驻极体电容传声器、全指向性电容传声器、抗噪声电容传声器、扬声器、受话器、音乐耳机、手机耳机、航空耳机等，我们还能根据客户要求定制多种类型的电声产品。

That isn't to say that Linstead plays the acoustic guitar exclusively on-stage or in the studio; while the acoustic guitar is his primary instrument, Linstead also plays mandolin, violin, bass, acoustic piano, electric keyboards, various wooden flutes, and the bouzouki (a traditional Greek string instrument).

这就是说，Linstead只在舞台上或录音棚里演奏非电声吉他；虽然非电声吉他是Linstead主要演奏的乐器，他也演奏曼陀林、小提琴、贝斯、声学钢琴、电声键盘、各种木笛，以及布祖基琴。

In summary, various key experimental conditions in electron acoustic imaging of ferroelectric domains were systematically studied. The optimum experimental conditions to obtain EAI of domains with good quality and the factors important to image analysis have been presented. The piezoelectric vibrator model and calculation of motion equation are helpful for explaining the imaging mechanism and related experimental phenomena. The sample holder with variable electric field was designed. The domain movement of BaTiO〓 ceramics and crystal under lateral and longitudinal applied electric field and domain movement of PMN-PT crystal under longitudinal poling electric field were observed. The application of SEAM on revealing of ferroelastic domains, imaging of residual stress distribution in ceramics coatings and around the pores on the surface of ferroelectric ceramic composite have been reported respectively. All these works enriched the study of electron acoustic imaging and extended the application of SEAM in the characterization of materials.

综上所述，本文系统地研究了各项关键实验条件对电畴电声成像的影响，指出了获得最佳畴结构电声像的条件和成像分析中应当考虑的各种影响因素；提出了解释电畴电声成像的压电振子模型，在此基础上推导并求解了压电振子运动方程，并对一些实验现象作出了解释；成功地设计了可变电场的样品台，观察了BaTiO〓陶瓷和晶体在横向电场作用下的畴运动，PMN-PT晶体在纵向极化电场作用下的畴运动；探索了电声显微镜在铁弹畴成像，陶瓷涂层应力观察，陶瓷自然表面气孔周围应力成像的应用，这些研究，丰富了电声成像的学术内涵，拓展了电声显微镜的应用领域。

Ring appears armature electro-acoustic transducer, abandoned plane ferromagnetic disk Diaphragm Park, began to use his ring on the armature and the bonding of non-ferrous magnetic Park tapered at the end of radiator to lower the quality of the sound output pressure to increase by 5 decibels, to extend the frequency range of about 500Hz, the successful design, moving iron type electro-acoustic transducer to achieve the ultimate performance.

1950年出现的环型衔铁电声换能器，摒弃了铁磁性平面园盘振膜，开始采用环状衔铁和粘接其上的非铁磁性园锥形辐射体来降底质量，使输出声压提高了5分贝，频率范围扩展了约500Hz，这一成功设计使动铁式电声换能器的性能达到了极致。

Condenses the Cliseeletroacoustics many years electroacoustics design experience,continuously is at the market leader position in theutili zationnewest numerical code science and technology aspect.

凝聚克莱斯电声多年的电声设计经验，在运用最新数码科技方面一直处于市场领导地位。

In 2005, in order to effectively connects rails the Clise technologyachievement and the market by further the wide range research anddevelopment, the Clise electroacoustics technology by MahDon took the product carrier, has established the AmericanManhattan electroacoustics technology limited company, simultaneouslyset up in China's Hong Kong and the inland has managed theheadquarters, and cooperated with the Chinese Guangzhou silver soundelectric appliance limited company, has established 17,000 squaremeters modernized specialized stages sound general equipmentdepartment base in the Chinese Guangzhou, has had provides thefirst-class audio frequency product to the Chinese interior and the Southeast Asia area consumer the stable foundation.

2005年，为了更有效地把克莱斯技术成果与市场接轨以进一步更大范围的研发，克莱斯电声技术以MahDon作为产品载体，成立了美国曼哈顿电声技术有限公司，同时在中国的香港及内地设立了管理总部，并与中国广州银声电器有限公司合作，在中国广州建立了17000平方米的现代化专业舞台音响总装基地，具备了向中国内陆及东南亚地区消费者提供一流音频产品的稳定基础。

Sound box range ofservice is extremelywidespread using Clise the electroacoustical technology productionMAHDON, included the movie theaterthe large-scale acoustic projectin the specialized domain,large-scale flowed the sound which theperformance, the recordingroom monitor, the orchestra used, down tothe recreation area like enlightened the gentleman branch, Kara OK, the bar...... The Clise electroacoustics design element,bases from the subject on the fusion world outstanding music cultureand the philosophy thought, from the sense of reality expressionactually the European craft solemn and respectful, fine and US muddywill be plain newly, sharply melts to a body.

应用克莱斯电声技术生产的MAHDON音箱的服务范围非常广泛，在专业领域上包括了电影院、大型音响工程、大型流动演出、录音室监听、乐队用的音响，以至娱乐场所如迪士科、歌舞厅、卡拉OK、酒吧……克莱斯电声的设计元素，从主题上立足于融合世界优秀的音乐文化与哲学思想，从质感表达上却将欧洲工艺的肃穆、精致与美国的浑朴、新锐融于一体。

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。