整流單元 的英文怎麼說
中文拼音 [zhěngliúdānyuán]
整流單元
英文
rectifying unit-
An improved method for calculating unconfmed seepage with changing dement conductivity matrix
改進的單元滲透矩陣調整法求解無壓滲流場The thesis is based on income question, forest coverage rate and grop production. to beging with, date envelopment analysis is proved that it can be applicated into grain for green in shan - bei district, and then in view of the fact, seven esential factors which have influence on the project are found out : expense of dam, expense of crop, expense of cash tree, expense of defense tree, other economic crop, expense of grass and graziery ; and the output factors include : income of gdp, pure income per captia, the area of decreasing land loss, graziery income, crop production, income of tree, the totle income of economic crop. after the date of each facts are puted into dea model, unefficiencial decision making units ( dmu ) found. the data that are got through adjusting unefficiencial dmus dy dea can offer guide in shanbei district upgrading of an industrial structure. at the same time, taking into account some possible problems in or after grain for green in shan - bei district, the thesis bring out some propesal to improve the circ umstance, enhance the life level and put the relation of population, resource and circumstance into a healthy orbit
因此，加快退耕還林還草，調整土地利用結構和產業結構，已成為實現山川秀美工程和可持續發展戰略的必經之路。論文以解決陜北地區的收入問題，植被問題以及糧食產量問題為出發點，首先從理論上分析了包絡分析方法在陜北地區退耕還林（草）中運用的可行性，然後結合陜北地區目前的實際情況，綜合分析出影響陜北地區退耕還林（草）的關鍵的七個因素作為輸入指標：水利水保設施投入，農作物投入，經濟林種支出，防護林支出，其它經濟作物，草類支出，畜牧業投入；以退耕還林所要解決的最終問題作為輸出指標： gdp收入、農民人均純收入、水土流失減少量、牧業總產值、糧食產量、林業總產值、其他經濟作物總產值。將各指標所對應的數據代入模型后，通過分析求解得出非有效的決策單元，再運用包絡分析方法的一些基本原理對非有效的決策單元進行調整，由此所得的數據對陜北地區的實際投入具有很好的指導意義。2 montoye r k, hokenek e, runyon s l. design of the ibm risc system 6000 floating - point execution unit. ibm journal of research and development, 1990, 34 : 59 - 71. 3 oberman s. floating - point arithmetic unit including an efficient close data path
我們採用90納米cmos標準單元工藝以及synopsys自動布局布線流程進行實驗，實驗結果表明該演算法在高性能雙通路結構的浮點加減運算中引入后，可以使得近路徑的運算延遲整體降低10 . 2 % ，且演算法本身沒有造成新的關鍵路徑。Abstract : a new clock - driven eco placement algorithm is presented for standard - cell layout design based on the table - lookup delay model. it considers useful clock skew information in the placement stage. it also modifies the positions of cells locally to make better preparation for the clock routing. experimental results show that with little influence to other circuit performance, the algorithm can improve permissible skew range distribution evidently
文摘:提出了一種新的時鐘性能驅動的增量式布局演算法，它針對目前工業界較為流行的標準單元布局，應用查找表模型來計算延遲.由於在布局階段較早地考慮到時鐘信息，可以通過調整單元位置，更有利於后續的有用偏差時鐘布線和偏差優化問題.來自於工業界的測試用例結果表明，該演算法可以有效地改善合理偏差范圍的分佈，而對電路的其它性能影響很小Abstract : an algorithm is presented for better legal solution in detailed placement of large scale mixed macros and standard cells ic design. due to the limitation of computing complexity, an effective and efficient initial placement is very important for detailed placement. novelty of this algorithm lies in a better solution at initial stage by using network - flow method to satisfy row capacity constraint and the thought of linear placement problem ( lpp ) to resolve overlaps. moreover, divide - and - conquer strategy and other simplified methods are adopted to minimize complexity. experimental results show that the algorithm can get an average of 16 wire length improvement on paflo in reasonable cpu time
文摘:以大規模混合模式布局問題為背景，提出了有效的初始詳細布局演算法.在大規模混合模式布局問題中，由於受到計算復雜性的限制，有效的初始布局演算法顯得非常重要.該演算法採用網路流方法來滿足行容量約束，採用線性布局策略解決單元重疊問題.同時，為解決大規模設計問題，整體上採用分治策略和簡化策略，有效地控制問題的規模，以時間開銷的少量增加換取線長的明顯改善.實驗結果表明該演算法能夠取得比較好的效果，平均比paflo演算法有16的線長改善，而cpu計算時間只有少量增加5, some feasible approaches of landscape configurable adjustment are put forward according to possibility analysis of village population development and distributing over staffed, evaluation on landscape energy input benefits and landscape suitability. that is, in view of assuring farmer realize comparatively good living standard, all the summit and partial slope bench plateau ecotope ( about 325 - 473 666. 7m2 ) should be changed over forest ( grass ) landscape or other non - yielding landscape
5 、通過對農村人口發展和人員分流可能性分析，評價了各景觀投能效益和景觀適宜性，提出了景觀結構性調整的可行途徑，即在保證20年後農民達到小康水平的情況下，農田景觀中的山頂和坡臺地景觀立地單元共約325 ? ? 473畝可以改變為林（草）地景觀，或其他非生產性景觀。Then we introduce the character of the atmosphere channel, which we emphasized on the atmosphere scatter, absorption and scintillation ' s effect on the laser beam. in chapter, we explain why we used cassegrain telescope to collect the optical signal at first, then the lightsource, detector, front amplifier used in optical communication has been compared to that of fiber communication, the noise including shot noise, thermal noise and background light noise has been explained here for analysis the snr and ber in the next section
在第三章介紹無線光接入系統的光收發單元，採用多孔徑卡塞格倫式的收發天線對消除減小大氣湍流影響有較大作用，針對大氣通道的特點無線光系統收發單元在光源、光探測器、前置放大電路上存在許多有別于光纖通信的技術，同時還闡述了光接收機包括背景噪聲的噪聲機制和接收靈敏度、誤碼率等指標，最後給出了一個整個傳送鏈路的功率預算。The project plans to implement the main studies in five aspects on the three key scientific issues and considering the needs of practical control, which include : 1 ) study of mechanisms and regularities of water cycle and water resources evolution in the haihe river basin ; 2 ) study of evolutionary and restoration mechanisms of water environment and ecology in the haihe river basin ; 3 ) study of basic theories and methodology for the assessment of utility of moisture use on different scales ; 4 ) study of mechanisms of water cycle and high efficiency water use for farmland and urban units ; and 5 ) study of integral multi - dimensional critical control of water cycle system of river basins
圍繞三大關鍵科學問題，結合實踐調控需求，項目擬開展五方面的主要研究：海河流域水循環與水資源演化機理與規律研究；海河流域水環境與生態演變機理與修復基礎研究；不同尺度的水分利用效用評價基礎理論與方法研究；農田與城市單元的水分循環與高效用水機制研究；流域水循環系統的整體多維臨界調控研究。The super entropy produce criterion is a good tool to judge the system ' s abrupt change from a lower grade to a higher one. in this paper the entropy of the urban resource - environment system was defined, and in an example of its application the super entropy produce criterion of the urban resource - environment system reflected the real developmental process of the whole system. furthermore, in this paper, a new model for the grid size optimization of the finite element method ( applied to the water quality modeling of the topographically complicated river ) was brought forward based on the maximum information entropy theory in condition that the length of gird was given
超熵產生判據為我們提供了判斷系統從低級有序向高級有序突變過程的工具，本文提出了城市資源與環境系統熵的定義，在實例中的應用證明城市資源與環境系統的超熵產生判據較好地反映了整個系統的演化情況；另外，本文針對在城市復雜河道情況下，利用有限單元法求解河流水質模型時網格單元大小難確定的問題，引入網格信息熵的概念，提出了有限單元法求解河流水質模型的網格優化方法。When the system is implemented by fpga, the software can be downloaded from our host pc, and the data can be saved in fpga
在fpga實現的環境中，系統軟體可以從pc機下載，存儲mp3數據流文件，由整數運算單元完成解碼工作后通過codec播放。Apu system, ac induction motors driving system, multi - torque output system, regenerative braking system and battery management system make of the hybrid system. all the subsystems are integrated systematically by the multi - energy resource management system
輔助動力單元（ apu ）控制系統、矢量控制交流調速驅動電動機的制動能量回收系統以及多級動力輸出管理系統和電池管理系統組成了整個混合動力系統。Plc is widely used in automatic control for its strong function, high reliability, wide applicability, modular structure and etc. many customer services, such as showing process - flow charts, displaying dynamic - data - base interfaces, editing tables, generating charts, managing production and etc, can be provided by connecting personal computers ( pcs ) to a plc network. in a plc - pc system, plcs, which serves as the low - level units, are used to collect and control the data, ( for example, the on / off quantities and analog input / output quantities )
把個人計算機連入plc網路可以向用戶提供諸如工藝流程圖顯示、動態數據畫面顯示、報表編制、趨勢圖生成、窗口技術以及生產管理等多種功能，作為底層單元的plc完成對現場開關量、模擬輸入輸出量的控制處理，而利用微型計算機良好的人機對話界面和數據處理功能，實現對一臺或多臺plc進行監控，充分發揮plc可靠、靈活的控制性能和計算機在管理、監控等方面的優勢，提高控制系統的整體自動化程度。Development of site control unit for 90 mw thyristor rectifier supply
晶閘管整流電源現場控制單元研製Based on comparison of several motor candidates, doubly salient permanent magnet ( dspm ) motor is a good choice for it ’ s outstanding performance. similar to conventional drive system, dspm brushless dc motor ( dspm - bldcm ) is composed of dspm motor and it ’ s controller. the controller is made up of three - phase full - bridge inverter, driver, dsp control unit and etc. for high power system, every switch of three - phase inverter is actually made up of four mosfets in parallel
在充分考慮國內外不同的液壓泵電動機的基礎上，本文選用了雙凸極永磁電機作為整個系統的電機本體，並配以電動機控制器（控制器包括三相橋式功率變換器、驅動電路、 dsp主控單元、電流采樣及預處理和位置采樣及預處理等主要部分）組成整個液壓泵電動機系統。According to the modern erp design and actualization ideology and methods, and based on the research of the former erp system, the author designs the thzd - erp, puts forwards the system flow chart. the author detailed designs the project of material, sale, and plan information, the project of product planing control information, furthermore, the author put forward the dfd of most modules. this project is based on the existing management system, but better than the system, it absorbed in the erp ' s base kernel and logic, implement the former erp system
以現代的erp設計和實施思想為指導，經過對太行振動進行需求分析，在原erp系統的基礎上制定了新的太行振動erp系統（ thzd - erp ） ，摘要一保留了原系統合理有效的部分，改進了不合理部分，並補充設計了原系統不完整的功能模塊和單元，給出了系統的流程圖，詳細設計了圍繞物料、銷售和計劃信息流（供銷存）的解決方案和圍繞生產計劃控制信息流的解決方案，並給出了各模塊的數據流圖（ dfd ） 。The paper describes the main techniques in the integral sliding construction for large span structure, which includes jacking scheme, plan layout, assembly, transport and stacking of components, setting of sliding system, setting of track, conformation of falsework, traction facility etc. discusses emphatically the sliding falsework, which includes the material, conformation, manufacture, welding and assembling of the shape steel tape falsework
系統分析了大跨度鋼桁架胎架整體滑移施工中的起重吊裝機具的選擇與布置、施工平面布置、桁架結構拼裝單元及滑移單元劃分、滑移施工方案及工藝流程、桁架的連接、拼裝運輸、及堆放、滑移軌道布置、滑移滾輪構造、延伸平臺布置以及滑移牽引系統等諸多工藝問題。In the case of repetition mode of the pulse power supply, fast charging circuit is designed to enhance the stabilize and charging efficiency of the dc power supply
為滿足脈沖電源重復頻率運行時直流電源的穩壓性問題，設計了晶閘管快速充電自停自補單元，同時也提高了整個電源系統的效率。The article tries to analysis the basic reasons of producing these industrial problems from industrial angle, analysis the whole procedure of developing securities online brokerage by the theory of value chain, and lies special stress on analyzing the model can be adopted of developing securities online brokerage, then solve the strategic problems of management and administration except industrial policy element from securities managers " angle, and avoid a series of problems above, and clear away obstacles for developing stock swap in china, and provide theory basis for securities managers promoting securities online brokerage
本篇論文試圖從產業的角度來分析產生這些具有行業性問題的根本原因，利用價值鏈理論對開展網上證券交易整個流程進行剖析，重點分析我國證券經紀商開展網上證券交易可採用的模式，再從證券經紀商的角度來解決除行業政策因素之外的管理經營戰略問題，從單元上避免出現以上一系列問題，為我國網上證券交易的開展掃清障礙，也為證券經紀商開展網上證券交易提供了理論依據。This is the core of the issue. in this section we designed the cells of the dac, including the decoder circuit, bandgap reference voltage circuit, current source circuit and switched circuit etc. the fourth chapter the simulations of circuit and errors of the dac are discussedi, so the simulation waveforms are plotted on the paper and we must take the error corrections and minimize ways
對于整個d a轉換器的具體結構和電路設計放在第三章，這也是本文的核心之處，對d a轉換器的整體電路及主要電路單元如：數字譯碼電路、帶隙參考電壓源電路、電流源產生電路、差分電流開關電路等進行詳細地分析和設計。This paper introduces the composing theory of a new highly efficient switching power supply invented for power system, with emphasis on the designing method and pivotal questions encountered wherein of the two main modules, highly efficient rectifying unit and monitoring unit
作者介紹了一種專為電力系統研發的新型高頻開關電源系統的結構組成原理，側重介紹了系統的兩個主要模塊高頻整流單元和監控單元的設計方法及在設計中的幾個關鍵問題。分享友人