電場流分級 的英文怎麼說

中文拼音 [diànchǎngliúfēn]
電場流分級 英文
electric field flow fractionation
  • : Ⅰ名詞1 (有電荷存在和電荷變化的現象) electricity 2 (電報) telegram; cable Ⅱ動詞1 (觸電) give...
  • : 場Ⅰ名詞1 (平坦的空地 多用來翻曬糧食 碾軋穀物) a level open space; threshing ground 2 [方言] (...
  • : 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...
  • : 分Ⅰ名詞1. (成分) component 2. (職責和權利的限度) what is within one's duty or rights Ⅱ同 「份」Ⅲ動詞[書面語] (料想) judge
  • : Ⅰ名詞1 (等級) level; rank; grade 2 (年級) any of the yearly divisions of a school course; gra...
  1. This thesis tries to solve the problems in the design and construction of jinping cascade 2 hydropower station. a typical section is selected to analysis seepage, seepage control and fem numerical simulation. the influence of different plans of excavation and support on seepage field of subsurface water and stability of adjoining rock are studied. the homologous support pattern is suggested according to the research results

    本文就錦屏二站(一期)深埋長隧洞的設計和施工中面臨的一些問題,選取隧洞的一個典型斷面進行滲、滲控析和開挖及支護的有限元數值模擬,從而就深埋隧洞不同的開挖及支護方式對地下水滲及圍巖穩定性的影響和所應採取的支護措施等方面進行了探索、研究。
  2. Agricultural products wholesale markets ( hereinafter called " apwm " ) have been main channel for circulation of fresh agricultural products in china. yet, with the modernization of the circulation mould, supermarkets, shopping malls, chain - stores, modern distribution centers and e - commerce will take off some turnover from apwm

    但隨著農產品通方式的現代化,超及連鎖店、現代生鮮加工配送中心、子消費類網站等均會農產品批發市的交易量。
  3. The primary of linear induction motor which drives the metro is installed on the chassis bogie, and because it is quite strict with laying down railway rail to use flat linear induction motor to drive metro, its secondary - - - - reaction board ( called induction board ), which is a kind of compound board of aluminum and steel, is fixed on the rail sleeper between the track. it is the airgap which is a gap between the primary and secondary of lim. the electromagnetic airgap is a very important parameter of lim

    利用有限元法對直線感應動機二維非線性渦進行了數值計算,並在此基礎上,運用有限元析的專用軟體ansoftmaxwell2d對單邊型直線感應動機的瞬態特性進行了模擬析,得到機運行過程中的磁推力、法向力、初、氣隙磁密等曲線,通過改變直線機參數,析了機氣隙對其瞬態性能的影響。
  4. Depending on how the ground surface is denuded, the feature of the current crustal stress field and rock stress environment can be calculated analyzing the result in this paper : by analyzing the recovering feature of the elastic deformation of the rockmass in unload - stage under various pressures, it has been found there is close relationship between the recovering degree of the elastic deformation of the rockmass and the unloading degree of the pressure the direction of the major principal stress in the crustal stress field is not consistent with the direction of the crushing stress regional tectonics borne during the last tectonic movement. the evolving degree of the regional geomorphology evidently affects the current crustal stress field, which changes from the self - weight stress field to the horizontal stress field, with the changing of the eroding degree of the regional geomorphology ranging from valley area to hilly country to flat country. in valley area, where there is two stress belts, the bankslope s tress belt and the self - weight stress belt within the mountain. the direction of the major principal stress is nearly parallel to the ground surface and inclines towards the valley in the bankslope stress belt. it is nearly vertical in the self - weight stress belt

    通過本文的研究成果,根據區域性地貌的演化特徵,我們可以大致地對現今地應力進行判斷:在卸荷條件下,巖體中彈性變形的恢復具有明顯的規律性,這種規律對于研究地應力的演變是有幫助的;地應力中最大主應力方向與區域構造形跡在最近的構造運動中所受區域性擠壓應力的方向無明顯的對應性;區域性地貌形態的演化程度對現今地應力的特徵具明顯的影響,隨著區域性地貌侵蝕程度由峽谷區、丘陵區、平原區的變化,現今地應力特徵由自重應力、水平應力為主含少量自重應力特徵向水平應力的規律變化;在峽谷區,山體中具有兩個應力帶:自重應力帶和卸荷應力帶,最大主應力方向在卸荷應力帶中近平行於坡面並傾向于河谷、在自重應力帶中近於直立;根據原始地面遭剝蝕的程度,可以大致地估算最大主應力和中間主應力的量值和方向;在丘陵區和平原區,最大主應力的方向近於水平,並與附近區域性侵蝕盆地和河的展布方向基本平行,根據原始地面遭剝蝕的程度,可以大致估算其最大主應力的量值;根據區域性地貌形態的特徵來析工程區的現今地應力特徵,並進而大致了解巖石的應力環境,這種析方法得出的結論與許多實際的地應力測試成果基本一致,對于大型水工程地下廠房和壓力隧洞的設計是有所幫助的。
  5. The integral method is adopted caculate and analyze to amf three - dimension distruction which is the structure of coil type four - pole and the structure of coil type double - pole and study the size of two kind of electrode structure axial magnetic flux density distribution and its fielduniformity. the finite - element method is used simulate that eddy current has effect on amf when contact tray of douple - pole amf structure is slotted or no

    本文採用積方法對本文設計的線圈式兩極縱向磁觸頭結構和線圈式四縱向磁觸頭結構的縱向磁三維佈進行了計算析。研究了弧燃燒期間兩種觸頭結構縱向磁強度的大小、均勻性,利用有限元法模擬線圈式兩極縱向磁觸頭結構的觸頭盤開槽和不開槽時渦對縱向磁的影響。
  6. The main work can be summed up as follows : firstly, we studied the thermal - field properties of vcsels, and analyzed the influences of current spreading, material parameters and operating conditions on the temperature distributions. secondly, we began with the electrode voltage and calculated the equipotential s distributions, compared the distributions of voltages and current densities in different depths of vcsels, and then studied the influences of the oxide - confining region with different position or thickness, and the different sizes of the gain - guided aperture and emitting window on the distributions of the injected current density, carrier concentration and temperature in the active region. thirdly, we realized the coupling of electricity, optical and thermal - fields, worked out the threshold voltage, calculated the distributions of the injected current density, carrier concentration and temperature under different offset voltages, and analyzed the impacts of temperature profile and carrier density on the refractive index, fermi levels and optical - field

    具體工作可以概括如下:首先,研究了vcsel的熱特性,析了擴展,材料參數和工作條件對于溫度佈的影響;其次,從壓入手,計算出激光器中的等勢線佈,並對不同深度處的壓和佈進行比較,研究了高阻區的不同位置和不同厚度、限制層和出射窗口半徑的大小對密度、載子濃度和溫度佈的影響;再次,實現了、光、熱耦合,求出了閾值壓,計算了不同偏置壓下的密度佈、載子濃度佈和熱佈,析了溫度和載子濃度變化對折射率、費米能和光的影響;最後,給出了考慮n - dbr和雙氧化限制層時激光器中的等勢線佈,析了n - dbr和雙氧化限制層對vcsel密度、載子濃度、溫度和光佈的影響。
  7. Chongqing have an abundant foundation to make the e - machine and electricity market if make full use of the present resources and markets together with the establishment of an e - business platform it will have the power to develop and consummate the e - business of machine and electricity market

    重慶可以充利用國有物質通企業遺留的筐架,結合現有市形式,重慶大學碩士學位論文中文摘要完善市配套體系建設,建立第三方市結構,搭建子商務平臺,發展機子商務,完成重慶機的升換代。
  8. Based on netomac, a software package for power system simulation, the model and algorithm of pre - dispatch schedule in generation markets, excitation system parameter setting, and power system small signal stability anaylsis are studied in this thesis. the main work is as follows : a model of pre - dispatch schedule is proposed, whose target is to minimize the market purchasing price ( mpp ) in the whole pre - dispatch period. then according to the characteristics of pre - dispatch schedule, the model of pre - dispatch schedule is simplified to minimize the mpp in each pre - dispatch time, and a three - step algorithm of pre - dispatch schedule is designed : dealing with the optimal problem in the whole period of pre - dispatch with static planning method, solving the problem of combination of machines with pr1 method, resolving problem of optimal power flow ( opf ) with modified powell method

    本文基於netomac模擬軟體,以發預調度計劃模型及演算法、勵磁系統參數整定和力系統小擾動穩定性析為研究內容,主要做了以下工作:建立了以整個預調度計劃周期內的市價格最小為目標的發預調度計劃模型,並根據預調度計劃問題狀態數多、變量多、混合整數、非解析的特點,將預調度計劃模型的目標函數簡化為各時段的市清算價最小,設計了三段式預調度演算法:用靜態規劃法求解整個預調度計劃周期內的優化問題;用優先法求解機組組合問題;用改進的powell法求解最優潮問題。
  9. ( 2 ) the method of finite element discrete and optimal parameter back analysis is adopted. ( 3 ) concentrated on the question of high external water pressure of the deep - lying tunnel, the basic theory and method calculating external water pressure are systematically studied. ( 4 ) based on jinping cascade 2 hydropower station, numerical simulation rain infiltration of seepage field under different drainage pattern and grouting pattern are studied, also, the high external water pressure is analyzed and studied and some seepage control measures are put forward

    ( 2 )採用有限元離散?優化法進行參數的反演析; ( 3 )針對深埋隧洞的高外水壓力問題,進一步析和研究了襯砌水荷載及外水壓力的作用機理和計算方法; ( 4 )以錦屏二站深埋長引水隧洞作為本文的主要研究對象,採用考慮降雨入滲滲析的方法對排水方案和灌漿封堵方案不同情況下的滲的水頭佈進行了數值模擬,並對其外水壓力進行了析和研究,提出了滲控制的具體措施。
  10. Based on the results, the article analysis the main factors : the voltage level and the current of the line, the height of the line, the distance between two phases, the structure and the location of the lines, that affect the distribution in human body, and gets some basic principles

    根據計算結果,析了超高壓輸線的壓等、離地高度、導線的相對位置結構和距離等影響人體內佈的主要因素,得出一些基本規律。
  11. The work mechanism of the novel laser is introduced, and the math expression of efficiency is given, and the lasing mode and the distribution of the optical field are simulated. it proves that for the novel laser, the inner quantum efficiency is larger than l, and at the same injecting current compared with the normal laser ; the output optical power is higher

    介紹了新型隧道聯結構激光器的工作機理,理論推導了新型結構激光器的效率數學表達式,模擬了激光器激射模式及內部光佈,並用實驗證明了新型結構激光器能夠實現內量子效率大於1 ,且在不高的注入條件下獲得了較高的功率輸出。
  12. Combine the domestic and international temperature sensing resistor fast - developing industry state and in tending towards the fierce domestic market environment of competition, gather together crisis, opportunity, inside advantage, inferior strength that the electron faces in the abundant investigation and research, it is rare for china to gather together the electronic outside opportunity, the strength of technical backstopping is rich, it is superior to develop the equipment ; but face the updating and upgrading of a product, the horizontal competition is fierce, the challenge of a large amount of outflow of manpower resources

    結合國內外熱敏阻器快速發展的產業狀況及處于趨于競爭激烈國內市環境,充調研了中匯子面臨的危機、機遇以及內部優勢、劣勢,認為:中匯子外部機遇難得,技術依託力量雄厚,開發設備精良;但面臨產品升換代,同業競爭激烈,人力資源大量外的挑戰。
  13. Since the concept of superlattice was proposed, vertical transport in superlattice has been investigated widely. the electric field domains and current self - oscillations which result from sequential resonant tunneling between different subbands of the superlattice are very significant phenomena. such kind of oscillation can be uesd to make tunable microwave oscillaors. in this thesis, low temperature transport problem, especially the formation of field domain and the condition of current self - oscillations in doped gaas / alas superlattice with weak coupling are investigated thoroughly and also by combining the macroscopic model with the microscopic one., the voltage - current characteristic and the current oscillation are simulated. the calculated result is nearly consistent with the experimental data

    由超晶格中子能之間的順序多阱共振隧穿引起的疇及自維持振蕩現象是其中的一個非常有意義的支,該現象可用來製作壓調諧微波振蕩器。本論文對弱耦合摻雜gaaa alas超晶格中的縱向輸運特別是針對低溫下的疇的形成和固定偏壓下自維持振蕩產生的條件進行了深入的探討,並結合宏觀模型和微觀模型對超晶格在時變壓作用下的壓-特性以及固定偏壓作用下的特性進行了模擬計算。
  14. Aimed to acquire high efficiency and realize high frequency of the converter, this paper takes the forepart of the aeronautical static inverter ( asi ) - dc / dc converter as research object. push - pull forward converter ( ppfc ), which adapts to be applied in low voltage, high current input power field, is proposed and studied in this paper based on comprehend to main characters of asi and references to the development of the vrm

    本文以航空靜止變器中dc dc ? dc ac結構的前為主要研究對象,針對效率和高頻化問題,在充考慮航空靜止變器前dc dc特點的基礎上,借鑒國外vrm技術的發展歷程,選擇了適合於低壓大合下工作的推挽正激路( ppfc ) ,作為基本路拓撲,進行了一些理論與實驗的研究工作。
  15. This paper introduces the electricity market status in and out of the country and the power industry in fujian province. it investigates how to set up fujian province electricity market. it provides a layered network model about the mainstream and branch cascaded hydro plants and the generation plan in one day considering the assistant serving. it also provides some software to resolve the problem about the hydro - thermal coordination. and provides some solutions in a certain exetent

    針對福建省水豐富、梯站較多的具體情況,採用網路法構建了一個完整的解決閩江各支、幹復雜梯站經濟調度的模型,建立了計及輔助服務的發日交易計劃的模型,開發了解決水火聯合經濟調度及相關的報價體系的初軟體,並進行了初步試算和析。
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