鐵模數 的英文怎麼說
中文拼音 [tiěmóshǔ]
鐵模數
英文
iron modulus-
The essential aspect of the mathematic model for inductor is the description of the hysteresis loops of the magnetic core material. the jiles - atherton ferromagnetic theory combined with the experience formula proposed by h. g. brachtendorf, c. eck and r. laur, was applied in this case. the model is more flexible than jiles - atherton ’ s, especially in the circuit model convert
本文採用了由h . g . brachtendorf 、 c . eck 、 r . laur提出的經驗公式與jiles - atherton鐵磁磁滯理論相結合的修改新數學模型，並將該模型轉換為等效電路模型模擬磁滯特性，實驗結果表明，該模型比jiles - atherton模型靈活，利於轉換為宏觀電路模型。Considering the electrovalence, the curve of water consumption and the reliability of water supply, this paper respectively sets up the model based on the maximal flux and the model based on the expectation flux. it takes yearly expenditure converting value and yearly cistern converting value as target function and takes continuity equation, velocity of flow and compression resistance of cast iron pipeline as restrictions and sets up the pga model on optimal design of water supply networks
考慮到峰谷電價、用水量變化曲線及用水可靠性因素的影響，分別建立了以最高時流量設計管網的模型和以期望時流量設計管網的模型，以年費用折算值加上清水池年造價折算值為目標函數，以連續性方程、管中流速和鑄鐵管耐壓值等為約束條件，進行并行遺傳演算法對給水管網優化設計的實現。Based on the analysis of eutectoid transformation of sg ( spheroidal graphite ) iron, the numerical model of formation of ferrite and pearlite during the eutectoid transformation was improved
摘要通過對球墨鑄鐵件共析轉變的分析，改進了球鐵件中鐵素體與珠光體形成的數學模型。It is indicated that the improved model can calculate the fraction of ferrite and pearlite more accurately, and can specially reflect the effect of both undercooling during the eutectoid transformation and the amount of graphite nodules formed during the process of eutectic reaction on the fraction of pearlite
結果表明，改進的模型可以更準確地預測球鐵中鐵素體和珠光體的數量，能夠準確地體現共析階段過冷情況和共晶球墨數對珠光體數量的影響。The distribution of fire smoke temperature, concentration, and visibility was analyzed ; and the airflow movement organization of the shallow embedded island platform during fire was studied
針對地鐵淺埋島式站臺列車火災情況，利用數值模擬場模擬方法，研究淺埋島式站點內煙氣橫向流動和不同站層間的煙氣縱向蔓延規律。Digital simulation analysis of ferroresonance of electromagnetic potential transformer based on matlab
鐵磁諧振數字模擬分析Numerical simulation of smoke control in subway fire
地鐵火災煙氣控制的數值模擬This paper researches and analyses the developments of web technology and magnetostrictive transducers from world wide region. the paper also analyes the characteristics curve of magnetostrictive transducers based on its equivalent circuit and researches the method how to make sure its syntony frequency and its electric simulation network parameters. at the same time, by using jsp technology, a magnetostrictive transducer electric simulation application is designed based on b / s three - tier system structure. the experiment data is fitted by curve fitting module. the equivalent input impedance of it with stimulate loop is separated based on the results of curve fitting and the syntony frequency and electric simulation network parameters of magnetostrictive transducers is determined by the input impedance. the method presented in this paper can determine the syntony frequency and electric simulation network parameters of magnetostrictive transducers with a better accuracy than the testing method of syntony & anti - synton y. further more, jsp, the advanced technology at current, has been used to realize a magnetostrictive transducer web electric simulation system. the system has good human computer interface and the function of resource sharing and information publishing. the research of this paper and its achievements have some practical merits in the researchful and applied fields of magnetostrictive transducer
用java編程語言編寫的曲線擬合模塊，對輸入的實驗數據進行了最小二乘法的曲線擬合；根據曲線擬合結果可從帶激勵線圈的磁致伸縮換能器的輸入阻抗中分離出磁致伸縮換能器鐵芯在無激勵電流時由機械振動形成的等效輸入阻抗，並由此輸入阻抗確定磁致伸縮換能器的諧振頻率及電氣模擬網路參數。本課題提出的方法與傳統的諧振?反諧振法相比，能更準確地確定磁致伸縮換能器的諧振頻率及其電氣網路參數。同時，採用當前比較先進的web技術，實現了基於jsp的磁致伸縮換能器web電氣模擬系統，該系統具有良好的人機界面和資源共享、信息發布功能。Study of triangulated irregular network andinterpolating terra in elevation in railway location
鐵路線路三角網數模及地面高程內插系統研究Numerical simulation on smoke control schemes of underground railway stations
地鐵車站火災煙控模式的數值模擬( 1 ) modeling of numerical analysis of frozen soil ventiduct roadbed by ann ( 2 ) developing the ann optimization design system for ventiduct roadbed in permafrost area ( 3 ) defining of the sequel learning tactic of three layer bp network ( 4 ) improvement on bp arithmetic in ann module
（ 2 ）開發了凍土通風管路基優化設計神經網路分析軟體系統具有完整的前後處理、溫度場分析、設計方案優化等功能，能滿足工程應用的基本需要。還能夠作為數值分析子模塊，以標準com組件形式嵌入「青藏鐵路數字路基」 gis系統。In the models, the iron core nonlinearly of the traction transformer and the magnetic hysteresis effect without the b - h curve are considered. having tested by digital simulation, the winding parameter has not changed in the state of external fault or magnetizing inrush etc. but the winding parameter has obviously changed in state of inter fault or inter - turn fault. ( 3 ) the rules three phases converted to two phases of traction transformer in electric railways are developed in this paper
（ 3 ）利用牽引變壓器磁鏈平衡方程，建立了基於系統辨識理論的雙繞組單相接線牽引變壓器、阻抗匹配平衡牽引變壓器及scott （斯科特）接線牽引變壓器的「灰箱」模型，該模型考慮了牽引變壓器鐵芯非線性和磁滯效應，但又不直接反映在模型中，並且無需鐵芯的b - h曲線數據。By constructing the geometrical model of a certain underground single arm type pantograph and applying the translation of pantograph - head balancing bar and the perpendicular displacement of pantograph in the direction of the movement of locomotive while raising pantograph as the objective which must satisfy the demands of locomotive ' s stable current collection, this paper applied the multi - objective optimization based on the genetic algorithms to design the pantograph mechanism
摘要在建立某地鐵單臂受電弓簡化幾何模型的基礎上，根據列車平穩受流對受電弓提出的各項要求，以受電弓升弓時機車前進方向上的縱向偏移量和弓頭平衡桿的平動為目標，以受電弓正常升弓所需升弓轉矩等為約束，運用基於遺傳演算法的多目標優化技術，對該型受電弓機構進行了優化，得到了使受電弓運動性能達到最優的幾何參數。In - depth knowledge of supplier base in the following manufacturing processes / products : investment / lost - wax / precision casting, zinc die - castings, aluminum casting ( gravity & pressure ), iron casting, permanent mold casting, sand casting, powdered metallurgy, mim, steel forging, brass forging, cold forming, stamping, deep drawing, fine blanking, machining ( milling, turning, etc. ), sheet metal fabrication, screw machining, cnc machining, mould making, tool & die, assembly, fasteners, springs, etc
對以下金屬製造工藝/零部件的供應商有資深專業經驗：脫蠟/精鑄件，鋅合金壓鑄件，鋁鑄件（澆鑄或壓鑄） ，鐵鑄件，永久模鑄件，沙鑄，粉狀冶金零件，金屬粉末注射成形件，鋼鐵鍛造，黃銅鍛造，冷鍛/冷鐓，沖壓件，拉深引深件，精密下料，機加件（自動車，數控機床，銑，車，磨等） ，板金件，制模及模具裝配、標準件，彈簧類。Linear induction motor is an important kind of machines which have some merits such as simple structure, low cost, durability, convenience for maintenance etc. the subject of this thesis is to study a big circular ring linear induction motor, and the major works in this thesis are summarized as follows : ( 1 ) considering the effects of the finite length of primary core, one - dimension analytical solution for the air gap field is cited in this paper. based on it, the single layer winding magnetic field is studied. considering whole - pitched and short - pitched winding configuration with odd poles and half - fulled slots in both ends, the double - layer winding magnetic field is analyzed, respectively
本文對大圓環直線感應電機進行了深入細致研究，內容包括： （ 1 ）本文採用有限長行波面電流作用於有限長鐵芯上的模型，引用了氣隙磁場一維解，研究了單層繞組磁場，奇數極半填槽雙層繞組在採用整距和短距時磁場的分析、比較，簡單介紹了二維解； （ 2 ）用有限元軟體ansoft對大圓環直線感應電機空載氣隙磁場進行了靜態分析，並分析了結果； （ 3 ）用軟體進行了額定電壓下的瞬態分析，得到了轉矩，位移，轉速隨時間變化曲線圖，利用單極性霍爾元件測定轉速並與軟體計算結果進行了比較，採用等效電路法計算了堵轉時的最大電磁力並做實驗進行了驗證，由實驗測得了三相電流波形，並與計算結果進行了比較，對其不對稱性進行了定性分析。Model sywly - 75 physics high to foam polyethylene insulating, aluminum pipe other conductor coaxial cable suitable for catv backbone project, its interior conductor adopt bastion of iron make aluminium, other conductor adopt aluminum pipe, the two have the same hot coefficient of expansion and modulus of elasticity, woods reduce in cable conductor draw the troubles that are led to the fact
Sywly - 75型物理高發泡聚乙烯絕緣、鋁管外導體同軸電纜適用於catv主幹線工程，其內導體採用銅墻鐵壁包鋁，外導體採用鋁管，兩者具有相同的熱膨脹系數和彈性模數，林減少了由電纜內導體拉拔所造成的故障。Secondly, introducing the image analyzing technology with reference to the disadvantages of the traditional ferr - graph analysis technology, and with the combination of characteristic parameter optimizing filtration so as to raise a description method of debris micro - morphologic character. thirdly, with the application of mode recognition method, completing the process of debris auto - recognition based on the collected information of the debris configuration characteristics ; and conducting the diagnosis on the aero - engine wear faults according to the theory of particle tribology. fourthly, introducing information fusion technology to solve the problem that a single method can not collect enough fault premonitory information to conduct the wear fault diagnosis, hence to conduct the research and exploration in the field of comprehensive diagnosis on the aero - engine ' s multi - fault premonitory information
本文的研究工作主要包括以下五個部分：首先，介紹航空發動機常見的磨損故障類型，研究磨損故障的失效機理，分析磨粒的產生機理、分類以及形態特徵：其次，針對傳統鐵譜分析技術的缺點，引入圖像分析技術，再結合特徵參數優化篩選，形成基於圖像的磨粒顯微形態學特徵描述方法：然後，基於提取到的磨粒形態特徵信息，應用模式識別方法完成磨粒自動識別，並根據顆粒摩擦學的基本原理進行航空發動機磨損故障的診斷與定位：再后，鑒于單一方法不能提取足夠的故障徵兆信息進行磨損故障診斷，本文引入信息融合技術，開展航空發動機多故障徵兆信息綜合診斷方法的研究與探索；最後，基於航空發動機滑油光譜分析與鐵譜分析數據，應用時序模型、灰色模型以及組合模型進行磨損故障的預測方法研究。Modular power supply units for systems for signalling equipment, telecommunications equipment and computer equipment. convecter module
鐵路固定設備.信號發送設備電信設備和計算機設備用插件式電源裝置.轉換器模數Subsequently, the special elastic coupling manner of the high - speed maglev is considered, and the restriction between the coupling factor of the single magnet module and other system parameters is studied. the influence of the coupling factor on the vehicle and guideway coupling vibration is also valued
在此基礎上研究二維電磁鐵模塊系統的彈性結構耦合因素，分析漸近穩定條件下耦合系數與其它系統參數的制約關系，考察耦合參數對車軌耦合振動幅頻特性的影響。Because the vigorous market competes and data warehouse give the business enterprise the high the bigness value, the high leaders of the material limited company of the two bureau of china ' s train draw a conclusion to establish the decision support system, increasing the competition ability of the business enterprise with more science more completely of decision support. we have investigate and understand the need of the leader, the manager of sale department and employee. according to the general principles that data warehouse design, we select the sale topic to establish prototype design
對于該公司的領導、銷售部門經理、以及員工的調查與需求了解，以及按照數據倉庫開發的一般原則，首先選取商品銷售主題進行快速原型設計，從第三段開始以銷售決策系統設計開發為出發點，按照數據倉庫開發的一般原則和步驟，逐步探討了基於數據倉庫技術的中鐵二局物資有限公司銷售決策系統的項目需求分析、系統軟硬體結構設計、概念模型設計、多維數據邏輯建模、數據抽取、轉換、清洗和裝載設計、多維分析服務器的設計以及前端數據分析工具的設計與開發等問題。分享友人