超声波的

Based on the principle of ultrasonic cleaning, the working process of the ultrasonic cleaning machine was analyzed including control circuit, driver circuit, frequency tracking,impedance matching and software design.

依据超声波清洗原理，分析了超声波清洗机的工作过程，对超声波清洗机的控制电路、驱动电路、频率自动跟踪技术、阻抗匹配及系统软件设计方法进行了详细介绍。

Theobserved strain is 10~2 times as local point strain at the same observed stress.This indicates that macroscopical symmetrical rock is quasi-brittle materialwith microcosmic heterogeneousness and its macroscopical mechanicalbehavior is the results of reciprocity and magnification between microcosmiccharacteristic, not simple sum.(4) The degree of irregularity of strain increases with the number of cycle.But degree of irregularity of transverse strain fluctuates larger at the samecycle. Moreover degree of irregularity of transverse strain is larger than that ofaxial strain. This shows that deformation and failure of rock is process ofevolvement of small crack. Small crack evolves from even and out-of-orderstatus to heterogeneous and ordinal status.(5) Ultrasonic speed decreases with the number of cycle. The decreasecourse is such: Firstly, ultrasonic speed fluctuates in a steady scope in somecycles; And then ultrasonic speed quickly decreases to a certain more smallvalue; Afterwards in succedent cycles, ultrasonic speed fluctuates about thevalue. That is to say, ultrasonic speed fluctuates and decreases at intervals ofcycles. In deformation process of rock, quantitative change and qualitativechange of its small crack evolvement carry through crosswise.(6) Strength and modulus of rock decrease with exponential function asscale of specimens increases.

同一表观应力下，局部点应变与表观应变相差可达2个数量级，表明宏观上均匀的岩石是具有细观特征的准脆性材料，其宏观力学行为是细观特征相互作用、放大的综合结果，而不是简单的叠加；(4)岩样轴向应变不均匀程度和横向应变不均匀程度随循环次数的增加渐进增大，但是在同一个循环内，横向应变离散系数随应力的变化波动较大，且同一循环级别下，横向应变不均匀程度大于轴向应变不均匀程度，表明岩石内部微裂纹的演化是岩石变形破坏的本质特征，这一演化表现为微裂纹从均匀无序分布逐渐向非均匀有序发展；(5)随循环次数的增加，所有岩样内部超声波速会出现衰减，衰减过程表现为在某几次循环内超声波速在某一相对范围内波动，然后急剧减小到某一较小值，在随后的循环内，超声波速又会保持在这一较小值附近波动，即超声波速表现为波动和急剧减小间隔形式衰减，表明从宏观看来平稳的岩石变形过程，内部结构演化过程(微裂纹发展及其相互作用)却表现为均匀量变和突发质变不断交叉进行的现象；(6)岩石强度和弹性模量随尺度增大呈指数函数规律减小。

The sex and gonad development in cultured Acipenser baerii was scanned by ultrasonic scanning. The results of sex and development stages of scanned A. baerii were identified by Minimally Invasive Surgical technique and histological examination.

中文摘要：利用超声波检查仪对人工养殖西伯利亚鲟的性别及性腺发育进行超声波扫描，并利用微创手术检查和组织学观察法来验证超声波对西伯利亚鲟性别及发育时期扫描的鉴定结果。

Changes in Xc for different pulp cellulose fibers are not the same during the ultrasonic treatment. Crystallization and decrystallization may both exist during the treatment at the conditions of lower-intensity ultrasonic wave. After treatment with ultrasonic Xc of MBKP cellulose is decreased and that of EBKP is increased. The changes of Xc of different pulp cellulose are more closely correlated to the fibers' morphology size and the cavitation state. The maximum Xc of 84% is obtained when BEKP cellulose is treated under the conditions of ultrasonic frequency f=23-25kHz, power=400w, and treatment time t=720s.

不同原料来源的纤维素纤维，由于形态尺寸和超分子结构的差异，经超声波处理后超分子结构表现出不同的变化规律；超声波处理过程中，结晶和消晶两种作用同时存在；超声波功率对纤维素的结晶度有较大的影响，对晶体尺寸有一定程度的影响，但结晶度Xc与超声功率没有线性关系；在频率为23-25kHz，功率为400W条件下，对桉木漂白浆纤维进行超声波处理，可获得高结晶度（84%）的纤维素样品。

In the fourth chapter, the effects of ultrasound on the direct electrosynthesis of solid K_2FeO_4 and the anodic behaviors of pure iron were investigated, and the physical properties of the samples were characterized by means of XRD, FTIR and SEM.

在第四章中，对超声波在14 mol／dm~3 KOH溶液中辅助直接电合成K_2FeO_4固体的影响作了研究，并采用扫描电子显微镜、X-射线衍射和傅立叶红外吸收光谱等技术对超声波作用和无超声波作用直接电合成的K_2FeO_4的表面形貌和结构进行了表征。

The ultrasound-assisted extraction process of apple seed oil was studied with orthogonally rotational combination design method.

本研究通过二次回归正交旋转试验，探讨了超声波辅助提取苹果籽油的工艺条件，得出了超声波辅助提取苹果籽油的数学模型，确定了最佳提取条件为：液料比为8，提取时间为35min，提取温度为35℃，超声波频率为60kHz。

Come Taobao ultrasonic / steam cleaning machine - live electrical class strength of Wang Pu, can count buy jade jewelry ultrasonic cleaning Flavoring machine (not counting phone Flavoring machine), like to know more can count ultrasonic jewelry Jade cleaning and ...

欢迎前来淘宝网超声波/蒸汽清洁机-生活电器类实力旺铺，选购可计数的超声波珠宝首饰玉石清洗加香机，想了解更多可计数的超声波珠宝首饰玉石清洗加。。。

Ltd., is a high-tech enterprise, which specializes in semiconductor seal equipment exploring, manufacturing and selling.the equipment of series ultrasonic aluminum wire press welder, series ultrasonic gold wire ball welding machine, series ultrasonic large wire press welding machine,series led automatic spot-gluing equipment.

一直以来，创唯星专注于超声波金丝球焊机、超声波铝丝压焊机、超声波粗铝丝压焊机、led自动点胶机等半导体封装设备的研发、生产和销售。

The equipment of series ultrasonic aluminum wire press welder, series ultrasonic gold wire ball welding machine, seriesultrasonic large wire press welding machine,series LED Automatic spot-gluing equipment.

一直以来，创唯星专注于超声波金丝球焊机、超声波铝丝压焊机、超声波粗铝丝压焊机、LED自动点胶机等半导体封装设备的研发、生产和销售。

Instant tea effervescent tablet, a kind of solid drink prepared by granulating, drying, and tablet processing using instant tea , citric acid and NaHCO3 as main the raw materials was described in this paper.

本文探讨超声波技术在速溶茶提取工艺的应用，针对与超声波提取效果直接相关的几个主要因素(超声波频率、提取时间、温度、料液比、次数)做单因素实验，并得到最佳提取工艺参数。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新