超声的

The main content of this dissertation includes: 1. Research on the theory of ultrasonic power supply, introduce its development process. On the basis of these, fix on the scheme of medical ultrasonic low-power supply. 2. According to the principle of modularized design, divide medical ultrasonic low-power supply into four parts. They are power amplify circuit, power control circuit, frequency automatic tracking circuit and matching circuit. Separately research on their theories and design their circuits and necessary programs, especially, effectively resolve the problem tracking the supersonic vibration system with a narrow syntony frequency bandwidth and a high swing. 3. The matching experiments gain good result, and prove that medical ultrasonic low-power supply is entirely up to the mustard on intellectualization, wide band of working frequency, steady output and high efficiency.

本文工作的主要内容包括： 1、研究了超声功率电源的原理，并回顾了它的发展过程，在此基础之上确定本文医用小功率超声电源的设计方案； 2、按照模块化的设计原则，将医用小功率超声电源的设计分解为功率放大电路、功率控制电路、频率自动跟踪电路和匹配电路等四个部分，分别研究了各部分的原理，在此基础之上进行了具体的电路设计和程序设计，尤其是有效地解决了对谐振频率带宽窄振幅高的超声振动系统的频率跟踪问题； 3、通过与超声振动系统的各项配合实验，取得了很好的实验结果，验证了医用小功率超声电源完全满足智能化、工作频带宽、输出功率稳定、输出效率高的设计要求。

On the basis of study on two projects:"10-DOF ultrasonic detection system for complex surfaces part" and "Ultrasonic water-logging automatic survey system for rods", this thesis studies the technologies of ultrasonic measurement, kinematic and dynamic modeling of 10-DOF ultrasonic system, real-time sensitivity auto-adjusting, integrated technology of ultrasonic measurement, surface construction and ultrasonic detection for complex surface parts and rods, thus improving the accuracy and efficiency of ultrasonic detection for parts of complex surfaces. Meanwhile, an auto-detection system for metal rods with rough surfaces and bad columniform accuracy is presented for the first time.

本文结合&10自由度复杂曲面超声检测系统&和&棒材水浸超声自动检测系统&两个项目的研究，主要开展了超声测量、检测机器人运动学和动力学建模、误差补偿、灵敏度自动补偿和曲面构件超声检测一体化技术和轴棒类构件超声检测一体化技术的研究工作，进一步提高了复杂型面构件超声检测的效率和精度，并首次针对表面粗糙、圆柱度较差的金属轴棒类构件开发出了高效率的自动化检测设备。

Its axial resolving power depends on the coherency of light source,even 10μm,and the depth it can cut through isn't limited by the eye's transparent diopter medium.You can observe the structure of not only optic anterior ganglion but also posterior ganglion.It has a brilliant applied prospect in the diagnosis of entoptic disease especially retinal disease,随访观察 and evaluation of treatment result.

OCT是超声的光学模拟品，但其轴向分辨力取决于光源的相干特性，可达10um，且穿透深度几乎不受眼透明屈光介质的限制，可观察眼前节，又能显示眼后节的形态结构，在眼内疾病尤其是视网膜疾病的诊断，随访观察及治疗效果评价等方面具有良好的应用前景。

Pathological diagnoses were obtained from bodkin puncture biopsy or operation exairesis. Masses were divided into 2 groups according to the diameters (≥2 cm and 2 cm). Diagnostic results were compared between single routine ultrasound and routine ultrasound combined with contrast-enhanced ultrasonography.

共112个病灶行常规超声及超声造影检查，经粗针穿刺组织活检和／或手术切除病灶获取组织病理学诊断；按肿块平均直径≥2cm和＜2cm分为两组，分别比较单纯常规超声检查与常规超声联合超声造影的诊断符合率。

The authors applied a series of eperimental and clinical determine methods forths first time in our country, such as electron microscope, specular microscope and ulrra- sonic pachymeter, to analyse and compare the effect to the cormeal endothelium between the posterion chamber phaco and intereaprular phaco. Therefore, the author evaluated objec- tively the intercapsulat phaco and it developing prospect.

我们在国内首次运用电镜、镜面反射角膜内皮显微镜及超声角膜测厚等一系列实验室和临床检测手段，分析比较后房超声乳化和囊间超声乳化对角膜内皮细胞的影响，对囊间法超声乳化及其发展前景做出较客观地评价。

Results The ultrasonic examination of tuberculosis hydrothorax showed that hydrothorax in thoracic cavity had no echo zone with clear sound transparent;pleura was thickened uniformly;opaque dark area of fluid had no parenchymatous phyma.

目的 了解结核性与癌性胸腔积液超声显像特点，研讨两者超声鉴别诊断要点方法应用B型超声检查，回顾性分析50例结核性与癌性胸腔积液的超声显像特点。

In the extracting process using ultrasonic wave, the preferable technical parameters of extracting polyphenols from the root and stalk of sanguisorba were acquired by changing the particle size of raw material, the ratio of sample weight to solvent volume, ultrasonic time, ultrasonic power, ultrasonic times.

在超声波法浸提过程中，通过调节料液比、原料粒度、超声时间、超声功率、超声次数因素的影响，确定了地榆根和茎中多酚较佳超声浸提工艺参数。

YU Qing-hong, TANG Feng-zhen,BO Yan-hong, et al.Function Department of Hanzhong 3201 Hospital, Shanxi 723000,China Objective To discuss the clinical value of 4D （real-time 3D） ultrasound for diagnose of fetal anomaly. Methods Philips HD11 ultrasonograph was used to observe fetal face, spine and limb structure firstly 2D and then 4D for stereopicture.

目的 探讨四维超声表面成像技术观察诊断胎儿畸形的临床价值方法应用飞利浦公司HD11型超声诊断仪先常规二维超声检查，然后采用四维超声检查显示胎儿各部位立体图像，重点观察胎儿颜面部、脊柱及肢体结构。

We have extracted apple seed oil by using ultrasound and studied the effect of the parameters, such as the power, the temperature and extracting time of the ultrasound as well as the particle size, solvent dosage on extraction rate by using the single factor and orthogonal design.

应用超声波法提取苹果籽油，采用单因素和正交设计法研究了超声功率、超声温度、超声时间、物料粒度和溶剂用量对苹果籽油提取率的影响，研究结果表明，在超声强度为175W，超声温度为60℃，超声时间为30min，溶剂用量为8mL/g，物料粒度为60目的条件下，苹果籽油平均得率为26.5%。

Moreover, scanning tunneling microscopy images of the SWCNT with atomic resolution show that it has a (10, 10) structure with a diameter of 1. 3nm and the current-voltage characteristics in quasi-radical direction reveal its metallic properties.

未经过超声的SWCNTs容易凝聚；观察到纳米管弯曲、分岔的现象，这是由于纳米管的六边形网络中引入五边形、七边形、八边形等缘故；得到（10，10）型SWCNT的原子像；测量了SWCNT的准径向I—V曲线，表现为金属性。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。