診斷顯象 的英文怎麼說
中文拼音 [zhěnduànxiǎnxiàng]
診斷顯象
英文
diagnostic imaging-
Expert system has many merits. it has the ability of heuristic illation, and can explain for illation and append new knowledge in the knowledge database. but it also has obvious shortcomings, such as, poor ablitity in ka ( knowledge achieve ), inefficient and incomprehensive. the artificial neural network has the ablitity of parallel processing, associative memory, distributed storage of knowledge and high robust etc. it also has perfect characteristics of self - organizing, self - adaptive, self - learning. it specializes in visualize ideation but is short of logic ideation
專家系統在故障診斷領域得到廣泛的應用，專家系統具有許多優點，能利用專家的知識進行啟發式推理，能夠解釋其推理過程，並能夠不斷地、靈活地增加新的知識。但專家系統也存在明顯的缺陷：獲取知識能力差、效率低、范圍窄。可以說專家系統長于邏輯思維缺乏形象思維。As a result of the heightening of mechanical operation speed and the application of new materials and new structures, the nonlinear dynamic behavior in rotating machines is becoming increasingly outstanding and important. nonlinear dynamic phenomena in rotating machines cant be described, explained and predicted by rotordynamics based on linear system theory. along with the deepening and permeating of nonlinear scientific research, the nonlinear vibration of rotor systems has become an attractive field in recent years. from a point of view to set up the distinct corresponding relations between vibration states and failures of rotating machines, main advances in the research of rotor nonlinear vibration are summarized, and typical nonlinear dynamic phenomena and their forming mechanism are also summed up in the paper. the aim of the paper is to enrich the diagnostic knowledge base of rotating machines. 55refs
由於機械運轉速度的不斷提高和新型材料、新型結構的推廣應用，旋轉機械的非線性動力學行為日顯突出和重要.基於線性系統原理的轉子動力學理論與方法難以對實踐中出現的豐富的非線性動力學現象作出準確的描述、闡釋和預測.近年來，隨著非線性科學研究的深入和滲透，轉子系統非線性振動已成為應用力學和機械工程領域的研究熱點之一.從有利於建立旋轉機械振動狀態集與故障集之間的映射關系出發，綜述了近年來轉子系統非線性振動研究的主要進展，總結了轉子系統中出現的典型非線性動力現象及其產生機理，目的在於豐富旋轉機械故障診斷知識庫.參55In simulations, all important phenomena, such as non - neutral sheath widening near cathode, cathode electron emitting, current channel migrating to the load side of the plasma, ion accelerating toward cathode and magnetic insulation of cathode emitting electrons etc, have been observed and depict the internal physics of this device. also presented is the influence of cathode emitted electrons on phenomena in the conduction processes of pegs. the simulation results show, without cathode emitted electrons, rapid magnetic field penetration takes place only in region near the cathode, with cathode emitted electrons, magnetic field penetration takes place in all plasma region
診斷發現了陰極表面非中性鞘層的形成、陰極電子發射、電流通道的漂移、等離子體離子加速以及陰極電子磁隔離等物理現象，揭示了這一斷路器件的物理機制；分析了陰極電子對peos導通過程中的物理現象的影響，模擬結果顯示：忽略陰極電子作用，磁場滲透現象主要出現在陰極表面區域，考慮陰極電子作用，磁場滲透現象出現在整個等離子體區域。It has high resolution of frequency and low resolution of time in low frequency part this characteristic is fit to probe normal signal with instantaneous abnormal phenomenon and show its components. so, wavelet transformation is seen as signal microscope. there is good effect to detect malfunction in dynamic system by means of continuous wavelet transformation
這很適合於探測正常信號中夾帶的瞬態反常現象並展示其成分，所以被譽為分析信號的顯微鏡，利用連續小波變換進行動態系統故障檢測與診斷具有良好的效果。Hi the environment of microsoft visual c + + 6. 0 and database management system ( dbms ) sql servert. o, the chinese version of window98 operating system, a fault diagnosis system is developed by using data mining methods, hi which visible rules are produced finally, the system is tested by experiment data of a rotaiy machinery
在windows98開發平臺上，結合開發工具microsoftvisualc + + 6 . 0 ， sqlserver數據庫管理系統。採用面向對象的程序設計思想和模塊化程序設計方法，對基於顯式規則的幾種數據挖掘方法進行了軟體實現，開發了基於故障診斷的挖掘系統，該系統具有一定的實用價值。After the injection of sonovue, the arteries filled first and permitted detailed visualization of pancreatic vascularity with excellent temporal resolution, which enabled us to conclude that the diagnosis was most likely a capillary tumor rather than an aneurysm
在注入聲諾維后，首先是動脈被充填，同時能夠在非常好的瞬時清晰度下顯示胰腺血管的分佈情況，這一徵象使得我們在最後的診斷上更傾向于毛細血管性腫瘤而不是動脈瘤。Ultrasonic bio - instrumentation is a kind of diagnostic instrument widely used in the clinic presently. it can examine the body by the scan of ultrasonic beam and display it by the brightness of ultrasonic echoes and then form the profiles of viscera and pathological changes
B型超聲診斷儀是目前在臨床中應用最廣的一種超聲圖象診斷裝置，它一般具有多種顯示方式，如b型、 m型等。The experiment in fact significantly reduces the cycle lime and cost of data tracing and demonstrates the superior advantage of virtual testing in problem diagnosis
該實驗顯著縮短了確認質量的時間並降低了開發成本，體現了故障診斷抽象試驗的優越性。分享友人