换能器

A Virtual Instruments based system for underwater electroacoustic transducer calibration was developed to automatize underwater acoustic measurements.

为了提高水声换能器校准的自动化程度和精度，研制了一套基于虚拟仪器技术的八通道水声校准与分析系统。

With the multiple spectrum character of the ultrasonic generator, an impedance model of ultrasonic transducer under the triple frequency harmonic is built.

本文利用超声电源的多频谱特性，推导出超声换能器在谐振频率三次谐波下的阻抗模型。

The radial vibration of a piezoelectric ceramic thin ring and a metal thin circular ring are analyzed and their electro-mechanical equivalent circuits are obtained.

该换能器由一个厚度方向极化的压电陶瓷薄圆环及一个金属圆环组成。对压电陶瓷圆环和金属圆环的径向振动分别进行了分析，得到了各自机电等效电路。

Put die on the die seat, adjust cross- plate and transducer draging plate of up and down, so that the steel needle can be inserted into die hole to adjust the pressure of weight, and then place the abrasive, open power switch of ultrasonic and rotating switch of die seat.

模具放在模座上，调节十字脱板及换能器上下拖板，使钢针插入模孔内，调整砝码压力，然后放上磨料，打开超声波电源开关和模座旋转开关。

Moreover the cyclic redundancy check algorithm is used for the data protection.

最后，给出了高强度聚焦超声手术治疗时所需的控制参数，和数据调用的实现方法，以及用于数据保护的循环冗余校验算法；随后介绍了16阵元相控阵换能器的声场实验装置和实验结果，并与理论仿真结果进行比较分析，验证了前文提出的超声声场计算综合方法的正确性和可行性。

A sectional hyperbola cylinder sound lens using for oil recovery is designed according to the refraction law of sound.

对于一定的油井，无法改变油井中的原油及其岩层对超声波的衰减作用，但是，利用声透镜可以改变超声换能器所辐射出的超声

Performance Analysis and Design of Cymbal Transducer with Low Frequency［J］.

低频钹式换能器的性能分析与设计［J］。

L Take imported high-quality transducer to improve the energy conversion efficiency.

采用进口优质换能器，能量转换效率高。

NEXO's new PS R2 Series offers the user a totally integrated loudspeaker solution, in which innovative transducer, waveguide and enclosure designs come together under the control of strategic equalisation from dedicated TD Controllers to ensure extended bandwidth and sound pressure levels, along with a high degree of speaker protection.

法国力素新PS R2系列提供了一个完整的音箱系统解决方案，它内里设计先进的换能器，波导管和箱体设计，交于全新设计和专用的TD处理器作策略性的均衡控制，以确保频响的伸延和声压的水平，及

These also show that TR can realize the self-focusing

这也表明无论换能器状况如何它都能实现自适应聚焦。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐