low-frequency stage 中文意思是什麼
low-frequency stage
解釋
低頻段-
This paper mainly analyses the influence of enterprise stage and industry, and conclude the top enterprise it governance structure, consequently sums up the characteristics of top enterprise it governance, which is strong governance consciousness of executives, clear it and enterprise goals, well designed governance capability, low change frequency and high continuity of it governance policies
本文主要分析了企業成長周期和所屬行業兩方面的影響，得出優秀企業的it治理結構。在此基礎上總結出優秀企業的it治理特徵:即高層管理者的治理意識強、企業的戰略目標和it目標明確、構建了良好的治理能力，並且具有it治理政策變動頻率低，政策連續性高，穩定性強等特點。 -
And classic pid control method and numerical pid control method have been introduced in the paper. the paper adopt stabilization border method to set the pid parameters and simulates the control system which is based on matlab / simulink. simulation results indicate that pid control ’ s simulation results have a good effect in low - frequency stage, but it is not perfect in mid - frequency and high - frequency stage
採用穩定邊界法實現對pid參數的整定，並基於matlab / simulink對控制系統進行了模擬，模擬結果表明:低頻段pid控制正弦跟蹤曲線取得了良好的效果，而在中頻和高頻段時的跟蹤效果不是很好， pid控制的階躍響應超調量較大， pid控制三角波曲線的高頻性能也不理想。 -
However, at present in china civil aviation industry, the flight procedure design for terminal airspace is still in its early stage, with existing problems, such as too many navigational aids, inefficient use of navigational aid frequency, and low adaptability of flight procedure
針對我國目前機場空域飛行程序設計還處在推廣階段這一情況，存在著諸如導航設施過多、導航臺頻率浪費嚴重、飛行程序適應性較差等缺陷，研究基於同一vor / dme導航設施機場空域飛行程序設計，具有較強的現實意義。 -
At the end of the thesis, the review on the developments of low - frequency square wave electronic ballast is given. then a novel two - stage low - frequency square wave electronic ballast for hid lamps is proposed with detailed proposed circuit analysis and control circuit description. finally simulation and experimental results are provided to verify its superiority
論文最後對低頻方波電路的發展概況作了綜述，在此基礎上提出了一種新型的兩級式低頻方波電子鎮流器，並對其工作原理及控制電路進行了詳細的分析，最後通過模擬和實驗結果對電路進行了驗證。 -
At the end of the paper, a novel two - stage low frequency square wave electronic ballast for hid lamps is proposed with detail design process. simulation and experimental results are provided to verify its superiority
最後論文提出了一種新型的兩級式低頻方波電子鎮流器，並給出了詳細的設計方法，論文同時提供了模擬及實驗結果對電路進行了驗證。 -
Helps eliminate stage rumble or other low - frequency room noise such as that coming from heating, ventilation, or cooling ( hvac ) systems
有助於消除舞臺上的嗡嗡聲或其他來自暖通空調（ hvac ）系統的低頻室內噪音。 -
Usually the low power operational amplifier is designed with rail to rail output stage, whose signal dynamirange is small, its output driving force is not strong, here it is designed with voltage displacement stage, and the strong driving force and the low power consumption in this circuit are achieved. with 5v single power, this amplifier consumes only several a, 100khz unity - gain frequency, achieves 80db dc open gain and 55 phase margin for a 100pf load capacitance and a 1m load resistance and other advantages
通常設計的低功耗軌對軌輸出運算放大器中，由於信號的動態范圍比較小，它的輸出驅動能力不強，這里設計的是採用電平位移電路同時實現了電路的強驅動能力與低功耗，它具有在單電源電壓5v的條件下，靜態工作電流只有幾微安，單位增益帶寬達100k ，開環增益能達80db以上，相位裕度也能達55度，輸出源沉電流達500微安以上等優點。 -
For vibration mode - shape, this affect is more severity on high rank stage vibration than low. with opened hollow and pier added on dam, the frequency of vibration decline. although the array of low rank vibration mode - shape is changed, the dynamic characteristic of the dam not in evidence change
對于振型而言，這種影響對低階振型比高階振型大，考慮孔口和閘墩后，大壩的自振頻率有所降低；在低階振型中有一部分的排列順序（大小關系）發生了變化，但這些變化不致使大壩的動力特性發生顯著的改變。 -
Its test results indicate : voltage mode inverters with high frequency link have the advantages such as high frequency electrical isolation, simple topology, two - stage power conversions, high power density, bidirectional power flow, good line current waveform, low audio noise, high converting efficiency, and high input power factor etc. this kind of converter lay the key technical foundation on new type high power density, high efficiency and low cost asi
設計的1kva270v 10 % dc / 115v400hzac單極性移相控制雙向電壓源高頻環節逆變器原理試驗表明，這類逆變器具有高頻電氣隔離、電路拓撲簡潔、兩級功率變換（ lfac / hfac / lfac ） 、功率密度高、雙向功率流、音頻噪音低、變換效率高、網側功率因數高等優點，為新一代高功率密度、高變換效率、低成本航空靜止變流器奠定了關鍵技術基礎。
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