環流理論 的英文怎麼說
中文拼音 [huánliúlǐlún]
環流理論
英文
circulation theory- 環 : Ⅰ名詞1 (環子) ring; hoop 2 (環節) link 3 (姓氏) a surname Ⅱ動詞(圍繞) surround; encircle;...
- 流 : Ⅰ動1 (液體移動; 流動) flow 2 (移動不定) drift; move; wander 3 (流傳; 傳播) spread 4 (向壞...
- 理 : Ⅰ名詞1 (物質組織的條紋) texture; grain (in wood skin etc ) 2 (道理;事理) reason; logic; tru...
- 論 : 論名詞(記錄孔子及其門徒的言行的「論語」) the analects of confucius
- 環流 : [氣象學] circulation; circulating current; circumferential motion; circular current; ring current...
- 理論 : theory
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The best optimum mathematical model is constituted. scalar factor of structural parameter on loop rectangular negative pressure and adsorption slide is calculated. structural parameter, air gas source pressure carrying capacity and thickness of air cell are made sure by hydrodynamics and the theory of gas lubrication
詳細論述了導軌副的設計過程,運用數學上的拉格朗日條件極值求解法,建立最優化數學模型,求出環矩形負壓吸附導軌的結構參數的比例情況,並運用流體力學和氣體潤滑理論確定了環矩形負壓吸附導軌的結構參數、氣源氣壓、承載能力和氣膜厚度的確定性結論。Depend on the comprehensive analysis and study of the structure, principle, and exterior characteristic of the motor, through the methods of system modeling and digital simulation analysis, two kind of control device that work for the low voltage ( lvdc ) and the high voltage ( hvdc ) in avigation are researched respectively. point to the control technique of close - loop speed stabilization at a limited adjustment speed range, we bring out the close - loop speed control method that using the rotor position sensor indirectly measure the speed of the motor
在全面分析了稀土永磁無刷直流電動機的結構特點、工作原理、運行方式以及外部特性的基礎上,通過系統建模和數字模擬分析,分別針對航空低壓直流( lvdc )和高壓直流( hvdc )兩種電動機構用永磁無刷電動機,在小范圍轉速連續調節下的閉環穩速控制技術進行了詳細理論研究,提出了利用轉子位置傳感器信號間接測量電機轉速進行電機轉速閉環穩速控制的策略。First, a simple discussion for the mechanism about electrostatic atomization of the liquids has been given ; then the paper theoretically analyzed waving course, liquid drop producing course, and the liquid drop diffusing course in electrostatics atomization process., gave an analysis about the methods about carrying charges to the liquid drop, and analyzed that liquid with high electrical conductivity can be carried charges and atomized by electric field, while the isolated liquid with low electrical conductivity can be charged fully with the soakage electrode and inducing charge methods. at last the paper designed and configured the experimental equipment, conducted the atomization experiment to the three liquid medium - kerosene, emulsifier and alcohol under the same environment, handled the experimental results, then summarized the relationship between liquid electrostatic atomization effect and liquid surface tension, electronic conductivity and viscosity, along with the influence of voltage to electrostatic atomization and so on, found out the liquid atomization rule in high voltage electrostatic field
首先,對液體介質的靜電霧化機理作了初步的探討,理論上分析了液體霧化過程中射流區、波紋區、霧滴區和霧滴擴散區;然後對液體荷電方法進行了研究分析,對于高電導率的液體,場致荷電和接觸荷電可以使其霧化,而對于電導率較低的絕緣液體,需用浸潤電極荷電和感應荷電方法使其充分帶電;最後,根據前面的研究分析,設計和組裝試驗裝置,在同一環境下對煤油、乳化劑、酒精三種不同液體介質進行高壓靜電霧化試驗,並對試驗結果進行分析處理,總結出液體靜電霧化與液體表面張力、電導率和粘度的關系及電壓對液體靜電霧化的影響等,得出高壓靜電場中液體霧化的一般規律。According to the system technology require, adopting singlechip realize open loop digital control of hdclsm ; using v / f conversion and complex key - control method realize digital setting of system parameter, such as velocity ; using micro - stepping control insure the motor running more smoothly ; adopting debasing speed control method to eliminate the mechanical impact of distance termination effectively ; at the same time, analyzing main power circuits drive circuit and protect circuit of system, completing hardware design and facture and software programming and debugging ; at last, making a whole test in hybrid rotary step motor. the experiment result indicates that this control system reaches the qualities required and run smoothly also
根據系統技術要求,採用單片機實現了混合式直流直線步進電動機的開環數字控制;利用v f變換和復合鍵控方法實現了系統轉速等參數的數字設定;利用細分控制技術保證了電機運行的平穩性,並進行了波形分析和理論研究;採用單片機軟體降速控制策略解決直線步進電機行程末端的機械沖擊問題;同時對主功率電路、驅動電路和系統保護電路進行了分析,完成了硬體設計、製作和軟體編程、調試,最後在混合式旋轉步進電動機上進行了全面測試。6. investigate the base oil for environment friendly lubricant and then select the composition of colza oil, esters and pao2. discuss on low - temperature flowability theories of vegetable - base lubricants
對環境兼容潤滑油的基礎油進行了考察,選擇菜籽油、季戊四醇酯和聚-烯烴作為基礎油,並從理論上對植物基潤滑油的低溫流動性原理進行了探討。Application of landscape ecology theories in drainage area eia
景觀生態學理論在流域環境影響評價中的應用Secondly, the paper brings out problems which are need to be solved as emphases by analyzing objectively the plant ' s cost control actuality, the existing problems and its reasons. the analysis indicates that because of high dependence on planned economy, exterior factors seriously restricting the reasonable price of fuel, the electrovalence being made by exterior, the deficiency of its interior mechanism and the big random of cost control, the enthusiasm that the plant manages and controls cost independently is badly hurt. thirdly, aiming at these leading problems, applying the present cost control theory and the main cost control methods of electricity enterprises both home and abroad, the paper designs and evaluates its cost control project at these aspects of productive technology, management, logistic control, financial management and the manpower cost, and lodges corresponding cost control project of every tache
論文首先對當今國內外成本控制理論研究現狀和應用現狀進行了分析,包括成本性態分析、成本控制內容分析及成本控製程序與方法的分析,為論文研究打好了理論基礎;其次客觀全面地分析了永昌電廠成本控制的現狀和存在問題及其產生原因,其中包括計劃經濟色彩濃厚、外部因素嚴重製約燃料成本的合理配比、電價確定權在外,它嚴重挫傷企業成本管理與控制的自主積極性,也包括企業內部機制不全、成本控制的隨意性大等問題,這為本論文提出了需要重點解決的問題;然後針對永昌電廠在成本控制方面存在的主要問題,應用當今國內外成本控制的主要理論和發電企業成本控制主要方法,從生產技術、生產管理、物流控制、資金管理及人工成本等方面對永昌電廠成本控制方案進行了相對全面的設計和評價,提出相關環節的成本控制方案。The dissertatio n constructs the index system, introduces the coefficients of development, coordination, fairness, and the coefficient of sd, which is composed by the former three and can reflects the sd overall strength of watershed, brings forward the quantative criteria of in order that the research of wrcc is based on the good watershed ecology and environment, the dissertation, according to the ecological appropriate theory, builds the logarithm normal distribution model about the relation between the growth of natural vegetation and the depth of groundwater ; based on this relation model, proposes a quantitative method of ecological water requirement ( ewr ) of natural vegetation in arid area, which utilizes the results of rs technique and the spot testing data of vegetative physiology demand
針對流域特點建立了基於水資源的流域可持續發展評價指標體系,引入發展系數、協調系數、公平系數,以及由其構成的衡量水資源支撐社會可持續發展綜合水平與能力的可持續發展系數,提出了可持續發展的定量判別方法。為保證在良好生態的前提下進行水資源承載能力研究,論文根據生態適宜性理論,建立了乾旱區典型天然植物生長與主要環境因子的偏態單峰對數正態分佈模型。基於此關系模型,利用遙感技術成果以及植物生理需水的現場實驗數據,提出了乾旱區天然植被生態需水量計算方法。This thesis tries to update the cmdsr system to achieve the characters below : real - time, better robust, higher recognition rate, non - special - man. considering the disadvantages of traditional improved spectrum subtraction speech enhancement, this thesis proposes the theory of fuzzy spectrum subtraction based on the fuzzy theory and improved spectrum subtraction speech enhancement ; as for the difficulties of detecting the endpoint of speech signal, the thesis gives the table of initial and the improved parameters, with which we can confirm the endpoints of mandarin digit speech ; the thesis puts forward two - level digit real - time speech recognition system, the first level is based on discrete hidden markov model which is linear predictive coding cepstrum ( lpcc ) and difference linear predictive coding cepstrum ( dlpcc ), the second level is based on formant parameters ; as for the realization of hardware, the thesis depicts the realization of every part of cmdsr based on the tms320vc5402 in detail ; as for the development of software, the thesis gives the software design flow chart of cmdsr, simulates the basic theory with matlab language and gives the simulation results
針對傳統的「改進譜相減法語音增強」參數設定單一、環境適應能力差的缺點,提出了一種利用模糊理論和「改進的譜相減法」結合的「模糊譜相減法語音增強」 ;針對語音信號端點檢測困難的特點,通過matlab模擬試驗,給出了能夠準確確定數碼語音端點的初始和改進參數表;提出了利用基於線性預測編碼倒譜參數和差分線性預測編碼倒譜參數相結合的離散隱含馬爾可夫模型進行第一級識別、利用共振峰參數進行第二級識別的兩級漢語數碼語音識別系統,在保證系統實時性的同時,實現連接漢語數碼語音識別系統識別率的提高;在硬體實現上,詳細闡述了基於tms320vc5402的連接漢語數碼語音識別系統各部分硬體設計;在軟體開發上,給出了連接漢語數碼語音識別的軟體設計各部分的流程圖,並對各部分進行了matlab模擬,並給出了模擬結果。The main research advances can be summarized as follows : ( 1 ) study the signal processing ' s performances and methods of homing torpedo system comprehensively, in order to setting up a corresponding mathematical models ; ( 2 ) analyze the ocean channel ' s effects on the work of homing system, then found some models such as target echo signal, noise ( including background noise, target radiating noise, etc ), ocean reverberation. according to them, simulate the array signal ; ( 3 ) the system structure, every function blocks composing are studied and founded thoroughly. then, discuss methods of signal processing in time domain and airspace domain ; ( 4 ) program the simulation software of torpedo ' s homing system according to the simulation models and flow charts, which connected with torpedo ' s control part
本文所作的主要工作及研究成果主要有以下幾個方面: ( 1 )對自導工作過程中的信號與信息處理的基本理論與方法進行了較為全面的研究,為建立一個較為完備的自導模擬系統提供了理論基礎; ( 2 )討論了自導系統工作過程中海洋通道對目標回波信號與目標輻射噪聲信號等的影響,建立回波信號的數學模型、環境場中的噪聲信號模型(包括海洋環境噪聲、目標輻射噪聲與魚雷背景噪聲等)與海洋混響模型,模擬產生了聲自導系統基陣接收到的回波信號與噪聲信號; ( 3 )深入研究並建立了自導模擬系統的總體框架,給出各個具體功能模塊組成,討論了聲自導系統對信號的時域與空域處理,並結合模擬程序中陣列信號處理模塊,給出固定多通道波束形成的模擬實現過程; ( 4 )根據系統的模擬模型與已建立的模擬流程圖編制了通用魚雷模擬器自導系統模擬軟體,通過網路與控制系統相連,組成完整的魚雷模擬器。The theoretical calculation and the experimental result indicated that, after temperature compensation, this kind of new hotwire air mass flowmeter still had high measuring accuracy when the environment temperature had wide range change
理論計算和試驗的結果表明,經環境溫度補償后,這種新型熱線式空氣質量流量計在大范圍環境溫度變化下仍具有較高的測量精度。Contraposing the measurement principle of the traditional hotwire air mass flowmeter, the reason of the excursion of the result for flow measurement was analyzed and inferred when environment temperature changed ; the method for temperature compensation and the realization circuit was given ; and compared the theory output of the new type hotwire air mass flowmeter with its real output after temperature compensation
摘要針對傳統型熱線式空氣質量流量計的測量原理,分析和推導出當環境溫度變化時對流量測量結果產生偏移的原因;提出了一種環境溫度的補償方法和具體的實現電路;並對經環境溫度補償后的一種新型熱線式空氣質量流量計的理論輸出和實際輸出進行了計算與比較。Second, we discuss the influence of environmental referance potential temperture and thermal wind on mesoscale symmetric instability. we find the expression of disturbance stream function and criterion of symmetric instability by analytical method and conclude that change caused by environmental referance potential temperture with height and thermal wind make critical richardson number and disturbance critical half - wave length of symmetric instability larger, that is to say, they benefit the occurance of symmetric instability. third, we study nonlinear perturbation analysis of mesoscale vertical circulation and evolution equation by means of f - plane. non - hydrostatic balance and filiter model
第二,討論了環境位溫與熱成風因子對中尺度對稱不穩定的影響。運用解析的方法求出了擾動流函數的表達式和對稱不穩定的判據,發現環境參考位溫隨高度的變化與熱成風因子使得對稱不穩定臨界理查遜數及擾動的臨界半波長都變大,這有利於對稱不穩定的發生。第三,採用f平面、非靜力平衡、濾聲波模式,討論了中尺度垂直環流非線性攝動分析及演變方程。The theories and design principles of each circuit of the spwm three - phase frequency inverter experiment unit are in detail introduced in this thesis. at the same time some experiment results are shown that include the output voltage and current waves when the load is in resistivity, inductivity or asynchronous motor
文中詳細介紹了spwm三相變頻實驗單元所包含的各電路環節的理論基礎及設計過程,並給出了調試結果,如負載為阻性、感性和異步電動機時,實驗單元輸出的電壓和電流波形。The key task of the military logistics for the new period is to meet the needs of military struggle. this paper derived the thoughts of contemporary management, the theory of military logistics and storage management in view of the special circumstances of military storage. it drew the part and the whole analogy adopting systematic methods and studied in renewing the thoughts, bringing forth new ideas and improving the means of management thus laying a theoretical foundation for completing the materials storage prewar, meeting the urgent needs at the beginning of the war and taking the emergency measures in the war
本文針對新時期軍事斗爭特點,結合軍事倉儲所處的特殊環境,分析了軍事倉儲特點、結構和地位作用,運用當代先進的軍事物流理論和現代倉儲管理理論,並針對軍事倉儲宏觀管理特點與不足,引入了軍事倉儲軟管理,重點論述了軍事倉儲軟管理需要開發的四項工程,即倉儲高新技術工程、倉儲智力工程、軍地倉儲聯合發展工程、倉儲法規管理工程。Considering of the problems exist in practice, large orifice discharge principle is employed to study the pressure distribution of ring runner system, the even ab lity for discharging of gates, the relationship of flow with the position of spr ue and the type of gates. a new design idea about circular runner system of cast is proposed
根據生產中存在的問題,用大孔出流理論研究了環形橫澆道系統的壓力分佈、內澆道出流均勻性及流量與直澆道引入位置和內澆道引入方式之間的關系,提出了圓形鑄件環形橫澆道系統新的設計思想。In the present work, there are two methods to design the shrouded - propeller. one is based on the blade element and momentum theory, the other is based on the ufbng - line ( surface ) theory derived from circumfluence theory
在實際工作中,函道螺旋槳的設計有兩種方法,一種是基於葉素理論與動量定理的工程方法;另一種是基於升力線(面)方法的環流理論方法。In the 1960 ' s, the circumfluence theory has been used to design the shroud - propeller, and it can be divided to two methods, one is that the profile of die shroud is provided, the other is that the pressure distribution of the shroud is provided.
到六十年代,函道螺旋槳的環流理論就可用來計算這種推進器的設計問題。本文中使用的方法是:函道用圓環渦系和圓環源、匯系模擬,用線性理論計算;螺旋槳用一個變負載的鼓動盤模擬。The impetus : network communication brings to the traditional information communication theory
網路環境對傳統信息交流理論的影響The second chapter focus on the status in quo and the existed problem. expatiate on the designation of hanshin line and the necessity and feasibility of vessel optimization. and based with the specialty of hanshin line and the logistics theory, how to design of the x hanshin shuttle service ' s operation and the cargo, document information operation reasonably and thoroughly is presented in third chapter. in the end with the regard to container capacity in hanshin line, the requirement of vessel ' s performance and the basic theory of vessel optimization, present the most favorable vessel style
第一章對中日航線集裝箱運輸市場和上海至大阪?神戶航線的特點進行了全面分析;第二章通過對jc公司的發展現狀及jc阪神航線所存在的問題的分析,對jc公司阪神航線的設計和船犁優化的必要性和可行性進行了闡述;第三章根據上海阪神航線的特點,運用現代物流理論對jc阪神穿梭快航的各操作環節和貨物、單證、信息的流轉進行了合理周密的設計。分享友人