无损的

Results revealed that the large side insulation of the stator bar in slot is available for ultrasonic pulse-echo testing; Coupling transducer on the surface of a practical stator bar could minimize the influence on the measurements of velocity, contributing no destructivity of the ultrasonic testing for stator insulation; The simultaneity of same velocity and higher attenuation can be used to detect insulation delamination from conductors; Compared with the wide sides of the bars in slot, the short sides of the bars near the exit from slot and the end bars had a same velocity and a higher attenuation; The velocity might be exactly measured on the shot sides of the bars near the exit from slot and the end bars, while the attenuation might not, which were examined though filed tests; V min decreased greatly and V av decreased slightly with the service time of the bars.

在实验室对线棒多种结构处的主绝缘和不同运行年数(未老化、16、18 和23年)线棒的主绝缘进行了低频超声反射法检测试验，并进行了现场试验，发现(参见 Hao et al， IEEE DEI， to be published)，槽部线棒的宽面绝缘不受换位绝缘的影响，比窄面绝缘更适合超声测量；线棒表面平滑的半导体层减小了耦合剂对超声测量的影响，实现了无损性；波速不变而声衰减减小可以检测线棒出现绝缘与导体脱壳缺陷；出槽口和端部线棒的窄面绝缘与槽部线棒的宽面绝缘相比，声衰减大而波速一致；现场试验验证了波速不受绝缘结构和现场测试条件的影响，而声衰减受以上因素影响很大(参见 Hao et al，中国电机工程学报， Vol.23 No.4)； V min 随运行年数明显减小， V av 随运行年数慢慢越小。

First of all, this paper introduces the whole design project and interrelated knowledge about Non-destructive detection, ultrasonic detection, and Phased-Array ultrasonic detection Then the paper depicts the principle of Phased-Array focus and abstracts a set of math model and feasible arithmetic on the base of the real parameter of the system. Put forward several problems that exist during the course of system development and program. Introduce some measures of distinguish that are often used in non-destructive detecting and echo wave crest. Then I depict one of the measures in detail that used in the course of non-destructive detection, which is the way of distinguishing whether defects exist or not. Then provide part core program to realize it. This paper also provides main flow chart through analyzing how main control program controls different parts to make the whole system more effective.

然后在文中以较大的篇幅，描述了相控阵聚焦的原理，并根据该系统的实际参数，抽象出一套数学模型和可行的算法，在此基础上提出了在系统开发过程及编程实现过程中存在的一些问题；介绍了在无损检测中缺陷的分类和对回波峰常用的识别方法，详述了系统开发过程中使用的其中一种识别方法，即判别是否存在缺陷的算法，并给出实现之的部分核心程序；详述主控程序如何控制各部分并协调各相关软件的工作，使整个系统发挥最高效能，并给出主要设计框图和程序。

In recent years, companies step up the development of the fast lane: the completion of the production run has been an annual output of 150,000 tons of pig iron smelting companies; under construction, the modernization of 30,000 tons annual output of castings and machining parts auto parts company has advanced Vertical shot molding pressure, the level of sub-type microseism compaction modeling line, self-hardening resin sand molding line, dual power supply frequency melting furnace, sand automated treatment systems, as well as CNC machining centers and machining equipment production lines production equipment, with direct-reading spectrometer, casthouse Express analyzer, Coordinate measuring instrument, ultrasonic flaw detector such as the modernization of non-destructive testing equipment and a full range of conventional detection equipment; at the same time the company has a skilled use of CAD / CMD technology design, manufacturing, machining workforce and more than ten years such as day, love and respect their jobs, and accumulated rich experience in foundry staff.

近年来，公司步上了发展的快车道：建成了已投产运行的年产15万吨生铁的冶炼公司；正在建设的现代化的年产30000吨铸件和机加工件的汽车零部件公司拥有先进的垂直分型射压造型线、水平分型微震压实造型线、自硬树脂砂造型线、双供电中频熔化炉、自动化的砂处理系统以及加工中心和数控设备组成的机加工生产线等生产设备，拥有直读式光谱仪、炉前快速分析仪、三坐标测量仪、超声波无损探伤仪等现代化的检测设备和齐全的常规检测设备；同时公司拥有一支熟练运用CAD/CMD技术进行设计、制造、机械加工的员工队伍和十几年如一日、爱岗敬业、积累了丰富经验的铸造员工队伍。

In this paper, the basic principle and the power factor of conventional SERDS are discussed. Aiming at its shortage of low power factor, boost chopper type SERDS is adopted. The equivalent circuit of the new scheme is built up, and then vector diagram is used to analyze the power factor of the system, also the harmonic distortion of the system is discussed. The experiment device is established base on a 380F/7.5 kW induction motor and a passive soft switching scheme is applied in order to improve the working condition of IGBT. At last, the experimental results are shown.

本文在分析传统串级调速原理的基础上，对系统的功率因数进行分析；针对传统串级调速系统功率因数低的缺点，采用升压斩波式串级调速系统加以改进；建立了升压斩波式串级调速系统的等效电路并采用向量图法对该系统的功率因数进行详细分析；分析了系统的谐波情况；构建了以7.5kW／380V电机为调速对象的升压斩波式串级调速系统实验装置，给出相应的实验结果；针对斩波器中IGBT处于硬开关状态的缺点，应用无源无损软开关技术予以改善，包括对软开关电路工作原理的分析、参数的设计并给出相应的实验结果。

Following aspects are specially discussed:(1) In-situ study on the mechanism and the rate determining step of corrosion processes at the interface between metal and corrosion media;(2) Reliability of structures in corrosive environment;(3) In-situ non-destruction corrosion inspection, evaluation, repair and maintenance of engineering structures;(4) A new approach for material selection-life cycle costs, LCC;(5) Terotechnology;(6) Corrosion protection and environmental protection;(7) microbiologically influenced corrosion;(8) Computer aided design of corrosion protection;(9) Corrosion and protection of reinforced concrete structures;(10) Corrosion and protection of marine structures;(11) New development of coating and corrosion inhibitor etc.

论述了腐蚀科学与防护技术几个值得注意的发展动向，它们包括：(1)金属／腐蚀介质界面反应及其快速步骤的原位研究；(2)在腐蚀环境中结构的可靠性；(3)腐蚀的在线无损检测／评价和设备的维修保养；(4)材料优选的新方法－LCC；(5)防护系统工程学；(6)腐性防护与环境保护；(7)微生物腐蚀；(8)腐蚀防护的计算机辅助设计；(9)钢筋混凝土结构的腐蚀防护；(10)海洋工程结构的腐蚀防护；(11)防护涂层和缓蚀剂的新发展等。

N is the number of pixels to process. bound, which is basically considered as incalculable for the nonce. The feasibility and reliability of proposed method have been verified on a group of ISO test images naturally acquired by various imaging sensors.

对于当前公认基本不可计算的给定图象的无损压缩极限，给出了一个实用的极限估计新方法，在对利用各种不同成象传感器自然获取的十余幅ISO JPEG标准测试图象的实验中显示出该方法的可用性和准确性。

This X-ray machine's power supply could take the place of expensive import conterparts, actualize the localization of high-tech products, decrease the total cost of supporting products and systems, also have advantages of easily use and maintenance. X-ray machine power supply's plan could promotes developments of medical device, safe security, non-destructive testing and relative fields, strengthen the competitive power of whole industrial, also promotes national economics.

X光机电源实施可以代替昂贵的进口产品，实现高技术产品的国产化，降低了配套产品及系统的成本，同时使用和维护方便。X光机电源的实施可以带动医用设备、安检设备、工业无损探伤设备及其相关配套行业的发展，提高整个行业在国内外市场的竞争力，促进国民经济发展。

The blood of dragon spatters and drops to the ground.

在变的清朗的天空中，龙神的双眼变的有神，移动也更加迅捷，可是天魔突然从爪中伸出十数条长长的，带著刺眼光芒的鞭状物，以此向龙神击去，这些挥动起来带著风雷之势的雷鞭，不但灵活地击中飞腾的龙神，而且严密地保护住天魔，每当龙神想攻击天魔，就不免为其所伤，龙血飞溅，直落到地面上，而更糟的是，有数次龙神好不容易以爪打中天魔，天魔却毫发无损，於是龙神依旧处於挨打的局面

If the Director shall cease to be a director of the Company(othewise than pursuant to the provisions of the Bye –laws of the Company relating to the retirement of directors,provided that the Director is re-elected at the annual Genral Meeting at which be reties)his appointment hereunder shall thereby automatically terminate but if such cessation shall be caused by any act or omission of either party without the consent concurrence or complicity of the other then such act or omission shall be deemed a breach of theis Agreement and termination hereunder shall be without prejudice to any claim for damages in respect of such brech.

如果主任将停止是Company(othewise 的主任比寻求再见的供应–公司的法律与主任的退休相关，在主任被重选在上在此之下是reties)his 任命的每年Genral 会议上条件下在从而自动地将终止但如果这样的停止将由或其他的党没有同意同时发生或共谋任一个行动或遗漏造成然后这样的行动或遗漏将被视为theis 协议突破口并且终止在此之下将是无损于任一要求赔偿损失关于这样的brech

The dissertation firstly introduces the MDJ1600J high speed palletizer and then lists several main problems for it which includes optimization of palletizing pattern, multiline-to-uniline problem, analysis and synthesis for feeding system, high speed turning without impact, the problem of power rating of three-phase induction motors (S1) which work with many short processes and many short switched-off processes in a period, The working principle of high speed palletizing and performance analysis for high speed palletizer, and then these problems are analysed respectively and their solution methods are presented.

本文首先对MDJ1600H高速码垛机从整体上进行了介绍，由之引出了几个高速码垛的关键问题，这些问题包括：码垛模式的优化，多线合一问题，供料系统的分析与综合，高速无损转位问题，在包括启动的多短过程多短断能间隔的断续周期工作制下采用S1制三相感应电机的功率定额问题，高速码垛动作规划和性能分析，然后对这些问题分别进行了阐述，提出了各自具体的解决方法。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。