超声波的

Ultrasonic generator: ultrasonic generator was installed in a 450 * 210 * 410 * iron box, a power ultrasound.

超声波发生器：超声波发生器被安装在一个450*210*410*的铁皮箱子内，为一个超声波电源。

The above effects of ultrasound on the structure and catalytic properties were related to the frequency of used ultrasound, and the relationship followed the Gaussian distribution curve approximately. The maximum was located at 50 kHz ultrasound.

并且超声波对催化剂结构和催化性能的影响与超声波频率有关，不同频率的超声波对LaBO〓催化剂结构和性能影响的规律近似高斯分布曲线，以50kHz的超声波影响最大。

This paper finds that the treatment efficiency of ultrasound wave at combined frequencies of low and high excels other fashion ultrasound wave. The combined frequencies ultrasound wave with 28 kHz and 840 kHz can compensate others trough each other and eliminate stationary wave and can make furthest effect of cavitate in liquid anywhere.

3本文从理论分析及计算机模拟超声波波形传播得出低、高频搭配的超声波对印染废水的处理效果远远高于其他方式。28kHz和840kHz频率超声波能够相互补偿对方的波谷，消除驻波，使液体各处所受超声波辐射均匀且声压均最强。

The effects of the melt treatment methods on the degassing efficiency of ultrasonically refined Al-1.65%Si ingots were studied under different ultrasonic frequencies,e g without degasser and ultrasonic,with degasser only,with degasser and ultrasonic under constraint cooling in the bottom of the ingot.

研究了不同超声波频率下熔体处理方法对Al-1.65%Si铸锭除气的影响，如：没有添加除气剂和超声波处理、只添加除气剂不进行超声波处理、铸锭底部强冷情况下既添加除气剂又进行超声波处理的情况。

Through comparing the ultrasonic refining effect with the traditional method for refining the waste silk frison material and studying on the feasibility of ultrasonic and the effect on the physicochemical property of the fiber,the reliable foundation was established that existing technique can be replaced by the ultrasonic method in the refining processes.

通过对超声波在绢纺长吐类原料中精练效果与传统工艺的比较，以及对超声波精练方法的可行性及超声波精练方法加工对纤维机械物理性能影响的研究，得到利用超声波精练代替现有加工工艺的可靠依据。

to overcome some disadvantages of low precision,slow dynamic response,unconvenience parameter adjust existing in high-power ultrasonic power supply,it applies intelligent control composed of 8089 microcontroller is proposed.the article introduces the modulation principle of spwm,the composition of high-power ultrasonic power system applying the single chip computer to realize the soft of phase lock loop,the mechanism of work and the software thought.it realizes the low loss,high power factor and the whole performance of the circuit is developed.

寂寞网民何时&回家吃饭&？基于单片机8089的超声波电源控制技术的研究。裴玖玲屈百达□摘要：针对目前大功率超声波电源采用模拟控制电路存在精度低、动态响应慢、参数整定不方便等缺点，采用单片机8089组成智能控制的超声波电源系统。提出了基于spwm技术的双闭环控制策略和应用单片机实现软锁相的工作原理和软件思想，使整个超声波电源实现了低损耗、高功率因数，优化了电路的整体性能。

The yeast treated by ultrasonic wave hardly affect the ferm...

超声波处理的酵母菌对发酵进程影响不大，均能正常发酵，对发酵后的酒样影响较大，经方差分析发现：酒度间存在显著性差异，超声波处理的酒度大部分降低，个别升高；残糖含量差异极显著，经超声波处理样品残糖含量均比对照高；各样品的总酸和挥发酸含量差异显著；超声波对总酚含量的影响不明显，对蛋白含量影响较大。

This study choose Changle Gaoya reservoir irrigation areas as the study sites, through the installation of different ultrasonic equipment on open channel of non-uniform flow to study the flow gauging of non-uniform flow in open channel:(1)5 tracks ultrasonic open channel flow meter used to real-time monitoring the flow of velocity ,water depth and discharge;(2)Ultrasonic liquid level gauge used to real-time measure the upper level and tail level of the two sections ,then the computer calculated average water level, gradient of water table and discharge;(3)Change the open channel water conveyance into pipeline full flow water conveyance, installed the ultrasonic liquid level gauge and pipe flow gauge on the inflow point and surface of pipe, water level and discharge would detect in real time.

本研究以山东省昌乐县高崖水库灌区为研究地点，通过安装在灌溉明渠上的不同超声波设备对明渠非均匀流的测流进行了研究：(1)用五声波超声波明渠流量计对测流渠段的流速、水深及流量进行了实时监测；(2)用超声波液位计将测流渠段的上下游两断面水位实时测出，再用计算机分时段算出平均水位、水面坡降及流量；(3)将测流渠段明渠输水改造成管道满流输水，分别在管道进口前及管管上安装超声波液位计和管道式流量计，将水位和流量实时测出。

The paper explains ultrasonic effect basal principle,and reviews the application of the ultrasonic technology active material extracts hit the target application condition in natural substance ,reaches the ultrasonic technology draw natural substance has draw rate high-speed,merit such as quick and not change effective component.

简述了超声波作用的基本原理，综述了超声波技术在天然产物活性物质提取中的应用情况，得出了超声波技术提取天然产物活性物质有着提取率高、速度快且不改变有效成份等优点。讨论了超声波提取中应注意的问题

The basic principles of ultrasonic technology for porcelain post insulator detection are presented, which consists of longitudinal wave detecting with bevel probe and creep-wave detecting.

介绍了采用超声法对支柱绝缘子进行探伤的基本原理，探伤方法主要有纵波斜角超声波检测和爬波超声波检测两种，纵波斜角超声波检测速度较慢。

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。