超聲導管 的英文怎麼說
中文拼音 [chāoshēngdǎoguǎn]
超聲導管
英文
ultrasound catheter-
Leading by professor yang weizhong, gamma knife center of neurosurgery of affiliated xiehe hospital in fujian medicine university introduced world leading operation navigation system, micro - operation system and ultrasonic operation devices, etc. selective cerebral artery tumour chemotherapy, embolism treating brain blood vessel disease were successfully applied and publicly recognized highly difficult neurosurgery operation is mastered like avm, aneurism, brain tumour, sponge tumourm, blood vessel tumour and other tumours
福建醫科大學附屬協和醫院神經外科及伽瑪刀治療研究中心在楊衛忠教授領導下，引進了國際先進的手術導航系統顯微手術系統和超聲手術系統等先進設備。成功地應用導管技術開展超選擇性腦動脈化療顱內腫瘤介入性栓塞治療腦血管病熟練掌握神經外科公認的高難度手術如avm動脈瘤腦干腫瘤海綿竇腫瘤血管腫瘤三腦室前後部腫瘤枕大孔區腫瘤等。Displacement distribution of longitudinal guided waves in composite pipes
復合管狀結構中超聲導波的位移分佈The project just do research on using certain guided wave modes to detect the pipe flaw
本文正是針對這一課題深入研究了縱向超聲導波技術及其檢測管道缺陷的方法。Ultrasound guided percutaneous transhepatic cholangiography
超聲引導經皮肝穿刺膽管造影In this thesis, based on pershing ii surface to surface missile, a new kind of ballistic missile was designed with an additional rocket engine, which can be ignited twice. firstly, aerodynamic computational models of missile body and warhead which reentry with supersonic are built according to the task requirements ; secondly, the propulsion system model of missile is built whose first two stages are solid rocket engines and the third stage is liquid - solid combined rocket engine. the nozzle and the shape of the engine are designed to meet the needs of the populsion project ; thirdly, the trajectory model of the mass point is built and a wavy trajectory is designed & optimized ; finally, the ability of a missile ' s breaking through defence is analyzed
以美國潘興導彈為原型，增加可兩次點火的末級發動機，改裝成具有跳躍能力的地地彈道導彈；首先，根據任務需求，建立了導彈的氣動模型，並建立了彈頭再入時高超聲速氣動模型；其次，建立了導彈推進系統模型，前兩級採用了固體火箭發動機，第三級採用了固?液組合火箭發動機，並在總體方案要求下，對發動機噴管和外形進行了設計；第三部分，建立了導彈質點彈道模型，設計了一條跳躍式彈道，並對跳躍式彈道進行了優化設計；最後，對導彈進行了突防能力分析，從分析的結果可以看出，跳躍式彈道的突防能力比常規的拋物線彈道要強。Laser, ultrasonic beam and microwave are used in non contacting level measuring systems. laser systems suffer from dirt, ultrasonic sensors are strongly affected by changes of the velocity of sound and usually a pipe is needed to couple the ultrasonic waves into the liquid tank, which is difficult when there is a high pressure or when explosion protection is necessary
壓力式液位測量系統原理簡單、成本低，但測量精度和應用場合有一定的局限性，超聲液位儀精度較高，但設備復雜，一般需要用導管將超聲波傳到被測的液體中，因而安裝維護較麻煩，激光測距系統對環境要求嚴格。Measurement of liquid flow in closed conduits using transit - time ultrasonic flowmeters
在封閉導管中用渡越時間超聲波流量計測量液體流量In 58 patients with indeterminate hepatic lesions demonstrated with at least 2 imaging methods ( ultrasound / computed tomography / magnetic resonance imaging ), ultrasound - guided liver biopsy revealed hemangioma
在58個病人中，至少兩種影像學方法（超聲/ ct / mri ）均表明其存在不確定的肝臟病變，而超聲引導的肝穿刺活檢證實為肝血管瘤。The laparoscopy were perfomed in 52 positive cases. results both sides of fallopian tube were passable in 93 cases. there were 94 cases with one side passable and other side partially passable or impassable
方法選擇不孕癥婦女215例，行經陰道超聲引導下超聲晶氧輸卵管聲學造影術，對檢查結果陽性中的52例行腹腔鏡檢查及治療。Numerical simulation of crack detection in pipes using ultrasonic longitudinal guided - wave
管道超聲縱向導波裂紋檢測數值模擬Abstract ： in this paper the synthesis methods of silver nanostructure materials, such as nanocubes, triangular nanoprisms, nanorods, nanowires, nanotubes, dentrites, flake, nanodisks, nanobelts, and so on, were introduced, the methods include reducing precipitation, photoinduced conversion, irradiation reduction, electrodeposition, template, microwave - assisted, ultrasonic - assisted, hydrothermal assemble, microemulsion, and so on
摘要：介紹了納米立方體、三角形納米稜柱、納米棒、納米線、納米管、樹枝狀、片狀、納米盤、納米帶等納米結構銀的制備方法，包括溶液還原沉澱法、光誘導轉化法、輻射還原法、電化學沉積法、模板法、微波或超聲波輔助法、水熱法、微乳液法等。Our company is adapted with iso9001 strictly for quality management, and the followong leading products series have populous in market : high - frequency series, ultrasonic series, contact jointing machine series, and plastic inhaling machine series
本公司嚴格執行iso9001的優化管理，已在市場上形成了四大主導產品：高周波系列、超聲波系列、碰焊機系列、吸塑機系列。Results : the ultrasound images of the dysplasic mammary glands were classified as 5 types : lobular hyperplasia, duct hyperplasia, galtioncus, focal fibrosis and fibroadenomatoid hyperplasia
結果：乳腺結構不良的超聲圖像可以分為5型：小葉增生型、導管增生型、囊腫型、局灶性纖維化型和纖維腺瘤樣增生型。Finally, some important conclusions were drawn, that is, using distributed pzt transducers, ultrasonic guided waves are generated and received in a pipe. usually, there are many different modes of guided wave propagating in the pipe and these modes are generally dispersive, the specific exciting signal of a harming windowed toneburst with a central frequency of 70khz for decreasing the effect of dispersion was selected. and guided wave are generated using 16 distributed pzt transducers in a circumferential direction for suppressing flexural modes
首先，對當前本課題研究領域的進展作出綜述，並簡要介紹與超聲導波技術相關的理論基礎；其次，建立了一套有效的實驗裝置，在此實驗裝置基礎上，重點研究了採用分散式pzt傳感器在管中激勵和接收特定模態超聲導波的方法：根據在管狀波導中傳播的超聲波具有頻散現象及多模態特徵，選擇具有單一頻率的特定信號激勵超聲導波，使其頻散最小；同時採用分散式傳感器抑制不同模態的波型。The first two reports of soybean transformation used two very different methods to transform soybean : hinchee et al ( 1988 ) used agrobacterium - mediated transformation of cotyledonary nodes while mccabe et al ( 1988 ) used particle bombardment of shoot meristems. soybean transformation reports following these initial papers have been limited and the transformation efficiency of soybean has remained low, the reason is that cells that are regeneration - competent must also be accessible and transformation - competent
目前應用於大豆遺傳轉化的方法主要有根癌農桿菌介導法，基因槍法，超聲波輔助農桿菌法，真空抽濾法，花山東師范大學碩士學位論文粉管導人法等，但其中獲得廣泛應用的只有根癌農桿菌介導法和基因槍法，但是這兩種方法在應用中也有一定的局限性。An alternative to traditional pipe detection method is to excite stress waves, which can propagate along the pipe, and to monitor the response of the pipe for changes in the received signal at some remote positioa an ultrasonic inspection technique using guided waves was applied to detect and determine the exact location of flaws in long steel pipes
而傳統無損超聲檢測技術是單點檢測，因而，在檢測長距離管道時，這種方法遇到很大困難。而利用縱向超聲導波檢測管道缺陷，激勵導波沿管道傳播，通過監測管道回波的變化，達到一次檢測數十米的管道範圍，並且是全范圍檢測。Conclusions this study indicates that pre - intervention ivus examination may be necessary in patients 60 years old and in those < 60 years old but with more than two risk factors
結論介入性心導管治療術前血管內超聲檢查在60歲和< 60歲卻具備兩個以上冠心病危險因子的病例更有意義。First, we introduce the development of this research field, and review the relative theories and basis on ultrasonic guided waves and development of transducer. subsequently, we depict in detail the prosess of the development of guided - waves transducer, based on the particularity of object to be detected - pip eline and some relative manufacture techniques of transducer. and we have made 24 guided - waves transducers and a mechanical device with which we can mount transducers on a pipe
首先，本文對國內外本課題研究領域的進展作了綜述，並簡要介紹了與超聲導波技術和探頭研製相關的理論基礎；其次，根據檢測對象? ?管道的特殊性，結合常規探頭的製造技術，詳細介紹了超聲導波探頭的研製過程，製作了24個超聲導波探頭和一個用於把探頭在管道上固定的機械裝置，並且對探頭的一些性能參數進行了數值模擬。Finally, we conduct the experiments of generating and receiving guided waves on a pipe with the transducer system we have developed in our lab. the result of these experiments indicates that the transducer system we have developed can effectively generate and receive special modes of guided waves we need, and restrain the guided wave modes that we do n ' t need. it is hopeful that our guided - waves transducer system can be used in the testing of pipes " flaw
最後，在實驗室中進行探頭在管道中激勵接收超聲導波的實驗，實驗結果表明，本文研製的探頭系統能夠在管道中有效地激勵和接收所需的導波模態，並且能夠抑制一些不希望出現的導波模態，有望用於管道缺陷的檢測。Ultrasonic guided waves technique is a new technique because of its advantages : fast, economical and reliable. unfortunately, there is n ' t guided - waves transducer in our country at present. based on this problem, the aim of this project is just to develop a kind of guided - waves transducer system with which we can generate and receive ultrasonic guided waves in pipes
超聲導波檢測技術以其檢測速度快、可靠、經濟而且不需要剝離管道外包層等優點成為管道缺陷檢測技術一個新的發展方向，但是目前國內還沒有應用該技術對管道缺陷進行檢測的探頭，本文正是從這個問題出發，目的在於研製一種用於在管道中激勵和接收超聲導波的探頭系統。分享友人