最高轉數 的英文怎麼說
中文拼音 [zuìgāozhuǎnshǔ]
最高轉數
英文
maximum number of revolutions-
This paper refers to several creation in compatibility with large volume of fed display and conversion of different video signal. it firstly used special central chip al300, designed correlative circuits, successfully developed vga full - color fed console system, compatible with resolution 1280 1024, achieved functions such as multi - video signal conversion and interleaving, met vga ’ s resolution of fed. it firstly designed and fabricated vga interface and separated video interface - - s - video, converting several video signals to 24 bits full - colored digital image signal in fed driving system, achieved separation of luminance signal and chromatism signal, enhanced the bandwidth of luminance signal
首次採用平板顯示專用控制晶元al300 ,設計並製作了相關配套電路,支持的最高解析度是1280 1024 ,實現解隔行和多種視頻格式轉換的功能,滿足了fed顯示屏對vga解析度的要求。首次在基於fpga的vga級彩色fed控制系統中設計並製作了vga介面和分離電視信號s - video介面,可以將多種視頻信號變換為fed驅動系統可用的24位彩色數字圖像信號,實現亮度信號和色差信號的分離,提高了亮度信號的帶寬。The system comprises three modules : the first is the ccd driver module, which controlled with cpld. programming the cpld to produce ccd driving pulses and synchronized communication signals. after preprocessing, the output video signals are transmitted into high resolution adc module, in which they are converted into digital signals, and then processed in arm processing module
整個系統分為三個模塊: ccd驅動模塊的核心是一片復雜可編程邏輯器件( cpld ) ,對其編程產生ccd的驅動脈沖及同步控制信號;視頻輸出信號經預處理后,由高精度ad轉換模塊進行采樣,將ccd輸出的模擬信號轉換成數字量;最後,將數據送入arm處理系統中進行后續處理。In this experiment, adjusting the throttle to the specific position, and letting engine rotary speed change from the lowest to the highest, at the same time, the data of the water temperature, the fuel temperature, the air press and the rotary speed can be noted. moreover, we can measure the fuel quantity and the ignition angle
實驗中,調節節氣門在特定位置,並讓發動機的速度依次從最低變化到最高,同時記錄水溫、油溫、進氣壓力和轉速等數據,還可以測出相應的噴油量、點火提前角。A data acquisition system with the following features is realized : ? transmission rate up to 100kbyte / s over usb ; ? system ' s dynamic range as high as 120 db ; ? multi - kind of trigger mode control ; ? sampling rate as high as 100 ksps ; ? 12 - bit a / d conversion accuracy ; ? 32k bytes on - board data memory ; ? the system, which was made up of large - scale electronic chips, is small, light and portable, and suitable for field use
本設計最終實現了一個瞬態信號數據採集系統,它具有以下特點: ?採用usb介面進行高速數據傳輸,傳輸速度達100kbyte / s ; ?採用浮點a / d轉換技術,動態范圍達120db ; ?多種采樣觸發控制方式; ?最高采樣率100ksps ; ? 12位采樣精度: ? 32kb數據緩存; ?使用新型大規模電子器件,系統結構緊湊,重量輕,適合野外作業。The hardware has two input channels of high - speed analog signal, with the signal amplitude of 0 - 5v, the conversion precision of 12bits, and the maximum sampling rate of 400ksps. this system includes 4 dsps ( adsp 2181 ), which can be arranged as a pipe line processing array. many algorithms can be realized in this system
系統硬體有兩路模擬數據採集通道,模擬信號輸入范圍為0 ? 5v ,轉換精度為12位,最高采樣率400ksps ;系統包含4片dsp ( adsp2181 )構成的流水線型的處理陣列,可用於實現各種演算法;系統的控制邏輯由fpga完成。We can get many physical parameters through indicator diagram acquired in the experiment. such as indicator work, mean indicated pressure, maximal pressure and corresponding crank angle, maximal rate of pressure rise and corresponding crank angle and mass fraction burned, heat release rate, etc. these physical parameters can analyze and show primary in - cylinder combustion process in engine
通過實測的示功圖,經過計算整理可以獲得諸如指示功、平均指示壓力、最高燃燒壓力及其對應曲軸轉角、最高壓力升高率及其對應曲軸轉角、已燃質量分數、燃燒放熱率等物理量,可供進一步分析和揭示發動機缸內燃燒過程。In the higher mathematics category, routine methods to work out the proof of an inequation are a flexible use of mathematical knowledge like monotonicity of functions, extremum values, maximum and minimum values, convexity function, medium value theorem, taylor equation, holder inequation, schwarz inequation, and the analysis, formation and transformation of inequation problems as well
摘要在高等數學?疇中,靈活運用函數的單調性、極值、最值、凸性函數、以及中值定理與泰勒公式、赫爾德不等式、施瓦茲不等式等數學知識,對不等式問題進行分析、構造與轉化,是解決不等式的證明問題的常用方法。1 ) the principles of various rotary - type transplanting mechanisms of high - speed rice transplanter had been studied, and the subjects for further research - - studying their dynamics characteristics to improve their dynamics performance and further to enhance the efficiency were put forward. an innovative idea of two - stage - optimization for dynamics analysis was presented in the paper. the creativity of the idea was that the kinematics optimization ( first stage optimization ) results were the constraint for dynamics optimization ( the second stage optimization )
本文主要的研究內容和結果如下: 1 )研究國內外各種類型的旋轉式高速水稻插秧機分插機構的工作原理,指出尚待研究的問題? ?研究其動力學特性,以改善動力學特性,進一步提高插次;為此提出了動力學兩級優化的創新性思路? ?以運動學優化( 1級優化)得到的機構參數范圍作為動力學優化( 2級優化)的約束條件,最終得到的最佳參數不僅能滿足運動學的要求,又具有最佳的動力學特性。Bp23 celb genes, b. pwnilus endoglucanase and b. polymyxa beta - 1, 4 - endoglucanase " genes, respectively. it was recognized as a new gene encoding for endoglucanase of b. mega terium. the recombinant plasmid tvchi ( pmd18 ~ t inserted with chitinase encoding gene from aplls ) and e. coli - bacillus shuttle vector physooplk were digested by ecori and sail completely, and the chitinase gene was ligated with shuttle vector, and the recombinant vector was used to transform b. megaterium ap25 competent cell
平板拮抗實驗同野生菌株相比,轉化子對麥長蠕抱菌的抑制作用最明顯,抑制百分數最高可達33 . 3 % ,而apll3和ap25分別是23 . 1 %和25 . 6 % ,同時轉化子對小麥紋枯病菌、棉花立枯病菌、棉花枯萎病菌和小麥的全蝕病菌也具有較為明顯的抑制作用。The results showed that yield structure of the middling population treatment were the most excellent as a whole and its grain yield was the highest among the three treatments, while the dynamic of tiller and its formation into panicles, root - bleeding intensity / spikeltes, lai and its structure, dry matter accumulation and transportation were the most reasonable too
結果表明,中等群體處理的產量結構最優,在三處理中稻穀產量最高,其莖蘗消長與成穗、穎花傷流量、葉面積系數與結構以及干物質積累與轉運總體上最為合理。Thermal stress control system actually gather the real - time data of unit sets , compute temperature fields , stress fields and maximum dangerous stress by the math modal , decide target and speedup rotation in every stage of startup process , and justify automatically to realize auto control a serial of processes of turbine , such as speedup , warm - up , connecting net , load changing , stop and unsteady condition etc , and improve automatic level of the unit sets. turbine auto startup ( tas ) system can automatically evaluate steam turbine ' s startup and load changing process according to thermal stress of
熱應力控制系統實際是對機組運行參數進行實時採集與監控,通過數學模型實時地計算高、中壓缸轉子的溫度場、應力場分佈,以及最危險熱應力,以確定啟動過程各階段的目標轉數及升速率,並進行自動調整,實現機組沖轉、升速、暖機、並網、升負荷、停機以及異常工況下的自動控制,大大提高了機組的自動化水平。A new type of very low specific speed pump ? roto - jet pump is presented for low flowrate and high head transportation, which is introduced at the end of the thesis
論文最後主要研究了一種隸屬于極低比轉數離心泵范疇的新型泵? ?旋噴泵,它是一種新型的石油化工用泵,具有流量小、揚程高、流量揚程曲線平緩的特點。With promulgation and obliging actualization of iec 1000 - 3 - 2 etc. international standards, power factor correction ( pfc ) technique become a hotspot of research in power electronics field. based on average current mode, the paper introduce the design and implementation of a fully digital controlled single - phase boost power factor corrector with fast response. the control - loop circuit is realized using digital control and the corrector can tend to unity power factor, lower current harmonics and high transfer efficiency
本文在平均電流模式控制的有源功率因數校正技術的基礎上,設計了一種控制電路基於數字信號處理器( dsp ) 、主電路採用boost變換器拓撲結構的全數字單相功率因數校正器,用數字電路代替傳統的模擬電路來實現對整個迴路的控制,最終使得校正器具有輸入功率因數接近於1 、低電流諧波以及高轉換效率的特性。At last, it deduced a new improvement method from the theories, and make use of a new physical concept ? the independent of speed function for accuracy checking up the turns sub - position and the communication point so as to control sensorless brushless dc motor with the breadth regulating - speed scope from zero to high speed. based on the function, it will research the new control method
最後,從理論上推導了新的改進方法,並利用一個新的物理概念? ?與速度無關的位置函數g ( ) ,其能高精度檢測出轉子位置和換相點,以此來控制無刷直流電機,實現電機從零轉速到高轉速的寬速度范圍調節,在此基礎上研究了應用這種新的位置函數的控制策略。The purpose of this paper is to find out the characteristics of corporate restructuring and reorganizations under the background of strengthened supervision and improved accounting standards in 2001. using financial data on chinese public firms that had performed restructurings in 2001, this paper studies the impact of restructuring activities on firms " performance. it finds that performance of sample companies are better than the market average both before and after restructuring, but financial ratios does not improve obviously, what ' s more, the roe ratios even drop generally, which are very different from the characteristics during the past few years
本文採用以財務數據為基礎進行評價的方法,對2001年上市公司資產重組進行研究發現,從資產重組的方式來看,收購兼并所佔比重最高,業績較好的公司偏向于選擇這種重組方式,而資產置換、股權轉讓仍為績差公司所青睞;從重組前後財務指標的變化來看,重組公司表現優於市場平均水平,但與往年重組公司當年業績即得到明顯提升不同, 2001年重組公司財務指標並未得到顯著提高,凈資產收益率更是全面下降,統計對比不支持上市公司利用資產重組調節公司績效的觀點。The hplap induced from the clone with two copies of hplap gene had higher enzyme activity. the clone with more or less copy was unfavourable to the hplap expression in p. pastoris
對部分克隆進行誘導表達發現只有2拷貝轉化子表達產物hplap活性最高,過高過低拷貝數均不利丁hplap的表達。In the section 1, we have introduced the background and the recent advance of the flattened gaussian beam ; in the section 2, for the first time, we have calculated the type - i and type - ii shg conversion efficiency and simulated curves versus the crystal length, the pumping light polarization rate, the order of the flattened gaussian beam and the pumped power intensity, we obtain ed that the highest efficiency was influenced by the order and the polarization rate of the pumped flattened gaussian beam
從三波耦合方程及clbo晶體的光學特性出發,討論了以平頂高斯光束入射時穩態的三波耦合方程的大信號倍頻解(包括類及類相位匹配的倍頻解) 。計算了其在clbo晶體上的倍頻轉換效率與晶體長度,基波偏振分量比,基波階數及泵浦波強度之間的相互影響關系曲線。得出影響平頂高斯光束的最高轉換效率的因素是基波的階數n和泵浦波的偏振分量比d 。By using for reference, in theory, simply introduced the basic working principle of the secondary adjusting hydrostatic transmission system, the basic controlling rules of secondary regulation, and the most radical controlling rules such as rotational speed, torque control and power control etc. by analyzing theory and studying, check - uping the motion parts of secondary element and constructing the control system ; and setting up the topmost rotational speed control system ; designing and completing the software of date processing and system control
通過參考相關的資料,從理論上介紹了二次調節靜液傳動系統原理,二次調節系統的基本控制規律,簡要介紹了最基本控制規律如:轉速控制、扭矩控制和恆功率控制等。在理論分析和研究的同時,對二次元件的運動部件的檢測和控制系統進行構建;組建了二次元件最高轉速控制系統;設計並完成了數據採集和系統控制軟體;同時,對二次元件控制系統和制動特性採用pid控制進行計算機模擬研究。The optimized parameters of high - frequency in bacillus thuringiensis plasmid - free mutant bmb171 by electroporation was studied. it showed that a highest electro - transformation frequency could be obtained, when sg solution was used as the buffer, and a 10. 0 kv / cm of field strength, one time of pulse as well as a growth phase of recipient cells at the exponential phase ( od650nm value was 0. 2 - 0. 3 ) were selected
對用電脈沖法轉化蘇雲金芽胞桿菌受體菌bmb171優化條件的研究結果表明,採用sg溶液作電脈沖緩沖液,用10 . 0kv cm的脈沖場強和1次電脈沖( 4 . 6ms ) ,以及採用對數前期( od _ ( 650 )約0 . 2 0 . 3 )收獲的受體菌,可以達到最高轉化頻率。The institute of electrical and electronics engineers ( ieee ) has developed the ieee 1394 specifications for very high speed data transfer applications, such as digital movies
電子電機工程師協會(電器和電子工程師協會)已經為最高速數據轉移應用程序,像是數傳電影發展電器和電子工程師協會1394規約。分享友人