查询词典 ultrasonic frequency

This thesis first proposes the thought of designing the vibration body with anisotropic composite, develops a sample linear Ultrasonic Motor, and studies its actuating mechanism, resonant frequency, speed, and driving force theoretically and experimentally.

本文首次提出了利用各向异性复合材料作为振动体的设计思想，完成了相应的超声直线电机的样机研制，并对其致动机理、固有频率、速度、驱动力等作了深入理论和实验研究。

Firstly, oscilloscope control system based on GPIB technique is presented with friendly operation environment to the HIFU system, and it uses multithreading technique in programming to realize real-time recording and display of the signal; Secondly, temperature collection and data recording system is designed, which also could get real-time recording and display of the 16 channel temperature signal, and it's believed to be of great use for further experiments of the HIFU system; Thirdly, multiple ultrasonic phased array's phase shifter is designed,which could provide 8-bit phase control in a range of frequency where the centrical frequency is 1MHZ. Fourthly, the module of serial communication is realized to insure the communication between devices and computer, including both synchronous and asynchronous communication, which enables the system to transfer data reliably and stably; Finally, the module of digital quantity control is accomplished, which provide for upper application the consistent solution to the control of exterior devices via digital interface. It can get or set the devices state using interrupt mode to receive input signal or send output signal.

主要有以下几个方面：设计了基于GPIB的示波器控制系统，给课题的研究工作提供了一个良好的环境，它采用了多线程编程的方法，能够较好的实时显示当前波形并记录数据；设计了温度采集和数据记录系统，能够对16路温度信号进行并行同步的实时采集，用于HIFU剂量学研究中温度场检测和医疗评价；设计了相控阵相位延时电路并且通过调试，满足了课题的相位控制的要求，在中心频率为1MHZ左右的频率范围内都能够达到8-bit相位控制；实现了串口通讯模块，为各项设备与计算机之间的通讯提供保证，它提供同步和异步的通讯能力，使系统能够可靠稳定的传输数据；建立了数字量控制模块，为上层应用程序提供一致的方法使用数字接口控制外部仪器，它使用中断的方式来接收输入或输出设定的开关量信号，从而得到或设定各种仪器的状态。

Finally, the principle of a 5DOF tracker based on single-frequency continuous ultrasonic wave is also investigated.

此外，还进行了单一频率连续超声波方位跟踪器的原理研究，提出了单一频率五自由度方位跟踪方法。

Methods In 62 sites of 42 burned patients, the increase of corial volume and the integrality of the dermal-fat interface were detected with 13 MHz high-frequency ultrasonic imaging . Histological slides were studied as golden standard simultaneously.

以病理组织学检查作为烧伤创面深度的诊断标准，应用13MHz高频超声检测41例烧伤患者62个烧伤部位的真皮肿胀度和真皮-皮下界面是否失去连续性。

The not little hairdressing instrument on market is to pass through dc of ultrasonic intermediate frequency, try to enhance nutrient material to pass through the ability of corneous layer; How, the effect also not remarkable from beginning to end, use this kind of technology for a long time to also can be brought send pore bulky.

市面上不少的美容仪器都是透过超声波中频直流电，试图增强营养物质穿越角质层的能力；奈何，效果亦始终不显著，长期使用这类技术也会引致毛孔粗大。

To evaluate the clinical value of high-frequency Ultrasonic in diagnosing the body sur-face soft organization cysticercosis.

目的 探讨高频超声对体表软组织囊虫病诊断中的临床应用。

The unit's transmitter sends out pulses of ultrasonic waves at the same frequency as the bat, and the receiver picks up the returning echoes, Because these are still above the frequency at which the human ear can pick them up, the echoes are filtered through circuits which turn them int clearly audible 'bleeps' before passing them into headphones.

由于这些仍是在频率上超过了人耳的可闻范围，回波在送到耳机之前通过电路滤波，这个电路把回波转化为清晰可听的信号声。

Main Productsèêitems: one, production and processing a variety of vacuum forming blister cover, blister Clamshell, blister pack, blister box, blister box manual folding. 2, sales Blister packaging whole plant equipment, high-frequency plastic welder, ultrasonic plastic welding machine, blister packaging machine hot, high-frequency mold, bakelite mold packing heat. 3, the United States agent Enos Innov-X ROHS detector, alloy analyzers, analyzer 4 ore, agent, laboratory testing equipment: tensile testing machine, rubber plastic, electrical and electronic categories, shoe leather, environmental categories, such as precision instrumentation.

厦门永鸿晖科技有限公司主要产品项目： 1、生产加工各种真空成型吸塑罩、吸塑泡壳、吸塑套、吸塑盒、吸塑手工折盒。2、销售吸塑包装整厂设备，高周波塑胶熔接机、超声波塑料焊接机、吸塑包装热合机、高周波模具、吸塑热合电木模。3、代理美国伊诺斯Innov-X ROHS检测仪，合金分析仪，矿石分析仪4、代理实验室试验仪器：拉力试验机、橡塑胶类、电子电气类、鞋业皮革类、环境类等精密检测仪器。

100KW factory specializing in the production of the following high-frequency machines, leading products: Automatic Blister molding machine, whole plant equipment ,5-30KW automatic synchronization slip Units fuse machine, double-headed synchronous machine fuse ,4-100KW automatic sliding Units welder, 4-15KW single turntable welder ,2-15KW welder-type double-headed foot, 8-25KW welder canvas ,4-15KW shielded single slip Units, rotary high frequency welding machine. 8-15KW environmental protection welder dedicated PET material, PP, PET, PVC plastic fuse box dedicated machines, ultrasonic plastic welding machine and so on.

本厂专业生产100KW以下高周波机器，主导产品：全自动吸塑成型机、整厂设备，5-30KW全自动滑台同步熔断机、双头同步熔断机、4-100KW全自动滑台熔接机，4-15KW 单头转盘熔接机，2-15KW双头脚踏式熔接机， 8-25KW帆布熔接机，4-15KW屏蔽式单头滑台、转盘式高周波熔接机。8-15KW环保料PET专用熔接机，PP、PET、PVC胶盒专用熔断机，超声波塑焊机等。

Ultrasonic method is using low-frequency ultrasonic energy cuticle damage and the Hot perforation technology is using more heat through the skin. Laser technology is in the skin melted on the stratum corneum and the micro-needle device is in the stratum corneum have a micro machine to achieve the purpose of transdermal.

研究活跃的促渗技术包括离子导入（使用低电压电流使药物通过皮肤）、电穿孔技术（使用高压短电脉冲创造暂时的皮肤水性通道）、超声波法（使用低频超声波能量破坏角质层）和热穿孔技术（使用热能使皮肤更具透过性）、激光技术、微针装置来实现透皮目的。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。