single pass system 中文意思是什麼
single pass system
解釋
單撂系統-
The signal sampling circuit fulfill the tasks of sampling signal and changing the double polarities signal to the single polarity signal ; the drive circuit receives the pwm signals from dsp and pass the signals to ipm through optical - couple devices ; the protective circuit safeguard the system against high current, high voltage, low voltage and high temperature on the ipm model
其中信號處理電路主要完成採集輸出電流和中間直流環節電壓信號，並對採集到的電流信號進行極性變換處理的功能；驅動電路接收dsp輸出的高頻驅動信號，通過耦合器件直接驅動ipm模塊；保護電路利用採集到電氣信號對整個系統實施保護，包括過電流、過電壓、欠電壓、 ipm模塊過熱等。 -
The main part and key technique of the cpa system is study : the generation of the femtosecond laser pulse is study, the modulation and maintenance of the ti : s laser is learned ; the types of the measurement for ultrashort laser pulse is generalized and the interferometric autocorrelation is expatiated ; the varieties of the stretchers is sum up and aberration - free stretcher is calculated and optimized to improve the stretching ratio ; the pulse selection is analyzed and a single pulse can be selected successful from the pulse train at a repetition rate of 82mhz ; the kinds of the amplifier in cpa system is gathered up, the eight - pass pre - amplifier and a good many effects in it is investigated. finally, the second, third and fourth - order dispersions in cpa system is analyzed systemicly, and the according means for dispersion compensation is worked out
對cpa系統的主要環節及關鍵技術進行了研究：掌握了鈦寶石激光器的調節和維護技術，較深入地研究了飛秒激光脈沖產生的機理，其中對群速色散、自相位調制、自鎖模等問題進行了詳盡的分析；總結了超短激光脈沖的測量技術，重點研究了干涉自相關測量法；在總結展寬器類型的基礎上，對無象差展寬器進行了理論計算、優化設計，提高了展寬倍數；深入論述了脈沖列的選單問題，熟練掌握了脈沖選單技術。 -
In succession, the theory of chirped - pulse amplifier system is given in detail, firstly, studying from designing experimental light road and optical components to theoretical analysis, we par ' tly finished the system by ourselves. about ultr a - shoft pulse with a pulse - width of 9. 8f s and output power of 650mw and band - width of about l 20nm is output from oscillator source, secondiy, the stretching capacity of single grating four - pass stretcher is measured using abcd matrix combining collins function, and the effect of relativ e parameters to the streching ratio is also simulated. thirdly, a new type of disjunctional frequency moduiating function is provided according to the gain - narrowing and gain - saturation which are appeared in the co urse of amplification, under modulating the two effects are both controlled on some e xtent, fourthiy, the effect of ase that is often ignored by people is analyzed and the resolving methods are also given
從光路、光學元件的自行設計到理論分析計算，初步建立了一臺實驗系統；採用abcd矩陣法結合collins公式計算了四通式單光柵展寬器的展寬量，並模擬了相關參數對展寬比的影響，對實驗具有指導意義；評價了再生放大器和多通放大器的優缺點，對放大過程中通常忽略的放大自發輻射現象（ ase ）進行了分析，並提出了相應的解決方法；針對放大過程中出現的增益窄化和增益飽和現象，對輸入種子脈沖提出了一種新的分段頻率調制函數，實現了對增益窄化效應和增益飽和效應的共同抑制；提出了系統的材料（包括放大介質和光路中的普通介質）正是融合高階色散的來源。 -
The load - control apparatus adopted a single - chip microcomputer system, whose mcu was a kind of high - speed processor - ds80c320, whose a / d switched apparatus was max180, whose low - pass filter was max293, whose f / v transformed circuit was lm331, whose controlled silicon phase - shift touch - off circuit was tca785, and whose communicating interface of rs232 was max202. the watchdog of the mcu was max705 and the system used an on - off electrical source to supply power
球磨機負荷控制儀採用了單片機系統， mcu採用ds80c320高速處理器，採用max180作為md轉換器，低通濾波器為max293 ， f v轉換電路利用lm331 ，可控硅移相觸發電路使用tca785 ， rs232通信介面晶元採用max202 ， mcu監控電路為max705 ，系統使用開關電源供電。 -
I introduce the background of the merger of stale - owned enterprise, the process of the development, the present situation and the problems that exist in the process of the merger, pass the concrete case example fiom act to theory, from single to totally character. by using the method of combining theories with actual cases, further analyze the problems of the merger between the state - owned enterprises. finally, bring up some resolutions : solve the roles of the government in the merger of the state - owned enterprises, make the law system perfect, establish levels and efficient capital market, speed up the progress of the circulation of the state - owned shares
在對具體案例進行詳細分析的基礎上，結合西方學者關于兼并收購的理論和我國學者的企業兼并重組理論觀點，以及我國國有企業兼并重組的背景、國有企業兼并重組的發展歷程和現狀，對目前國有企業重組中存在的問題進行分析；通過具體的案例從實際到理論，從個性到共性，用理論和實際相結合的方法，進一步分析產生國有企業兼并重組中產生這些問題的原因，並提出自己的一些關于如何從根本上解決國有企業兼并重組中問題的對策和建議：解決政府在國有企業兼并重組中的角色定位；完善國有企業兼并重組的法律環境；建立多層次和高效率的資本市場，完善市場監管制度體系；加快國有股的上市流通步伐；企業重組后注重核心競爭力的培養。 -
The system consists of the ac input stage, single phase pfc, main inverter, output low - pass filter, auxiliary power supply, etc. the power supply extremely has an important position in the electronics equipments
電源在電子設備中有著極為重要的地位，對變頻電源的研究具有重要的理論意義和工程實用價值。
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