extinction current 中文意思是什麼

extinction current 解釋
最小維持電流
  • extinction : n. 1. （權利等的）消滅，（生物等的）滅絕；（火等的）熄滅；（法律等的）廢除。2. 【物理學】消光；自屏；衰減。
  • current : adj. 1. 通用的，流行的。2. 現在的，現時的，當時的。3. 流暢的；草寫的。n. 1. 水流；氣流；電流。2. 思潮，潮流；趨勢，傾向。3. 進行，過程。
  1. The modulating signals of firing delay angle at the rectifier and firing lead angle at the inverter, and the excitation voltage are chosen to be control variables. the offset of the current of dc line and the extinction angle and the power angle of generator are chosen to be control outputs. then a nonlinear controller is designed for the system under study according to direct feedback linearization theory

    以整流側觸發延遲角的調節信號、逆變側觸發超前角的調節信號以及發電機勵磁電壓作為控制變量，以直流線路電流、逆變側關斷角以及發電機功角的偏移量作為目標輸出，用直接反饋線性化方法設計了系統的非線性控制器。
  2. The auxiliary modulating signals of the current controller at the rectifier and the extinction angle controller at the inverter, and the reference voltage of exciter are chosen to be control variables. then the all - state feedback linear optimal controller is designed

    以直流系統整流側電流控制器的輔助調節信號、逆變側關斷角控制器的輔助調節信號以及勵磁系統參考電壓作為控制變量，設計了系統的全狀態反饋線性最優控制器。
  3. Capacity of the output contacts is 150 w 1250w, max. working current is 5 a, but arc extinction is not permitted. mechanical data and installation

    裝置出口接點和信號接點最大允許接通功率為150w或1250va ，最大允許長期接通電流為5a ，且不允許斷弧。
  4. In order to measure the characteristics of such semiconductor optical amplifier, we adopted a set of measurement system. this measurement system can be used to measure the characteristics of all kinds of active or inactive optical passive components. such device presents good polarization insensitivity ( < 0. 9db ), wide 3db bandwidth ( > 33nm ) at 0 - 200ma and different input signal light wavelength and power, the maximum fiber - to - fiber gain of 10db, lossless operation current of 50 - 75ma for different input signal light wavelength and power, large extinction ratio ( > 50db ) and lower noise figure ( nf ) ( < 8db )

    與張瑞英博士一起，首次利用該種有源區結構制備出偏振不靈敏半導體光放大器，並在0 - 200ma注入電流范圍內獲得33nm的3db帶寬，在不同信號波長，不同信號功率0 - 200ma的注入電流范圍內，偏振相關損耗均《 0 . 9db ，在耦合差損為7db / facet的條件下，最大fiber - to - fiher增益達10db ，無損操作電流為50 - 70ma ，消光比達50db以上，而噪聲指數則低於8db ，最小可達4 . 6db 。
  5. The current and rapid loss of tropical hardwoods in many regions due to high commercial demand, low rates of successful replacement, and the long periods of growth necessary to produce new, marketable resources has raised concern about over - exploitation of some species, such as rosewood, although none of the trees are known to have been driven to extinction

    盡管當前還沒有一種樹木已經滅絕，但是在許多地區熱帶闊葉林的快速消失是由於高經濟需求、低比例的有效補充和必需品的長期增長，要求產生新的市場化的資源所引起的對某些物種的過度開采，例如紅木。
  6. Finally, we propose a main road model in city traffic according to the improved ns model with open boundary conditions, and study some characters about this model with different parameters. our purpose is to find out the actor which influent the main road ' s average speed and current, and also the law of city traffic. then we can give some advise for managing and controlling the main road trffic. organization and self - organization cooperation in this model is discussed. the effect of roads ' length, the number of intercections and their positions is self - organization, and the effect of the deceleration probability, the injection ( extinction ) rate, the cycle times of traffic lights is organization. we analyse the effect of the parameters above separately

    最後，在開放邊界條件下改進ns模型的基礎上，建立二維城市主幹道模型，研究不同參數條件下模型的性質，找出影響主幹道流量、速度的因素及城市交通流變化的規律，給出適當的參數匹配，為主幹道管理和控制提供依據。主幹道模型由一條東西向的主幹道和若干條南北向的支道組成，在支道和主幹道的交叉路口上設置紅綠燈，交叉口上的車輛可以轉向行駛。
  7. Firstly, the current status of particle extinction study is reviewed, and the methods for computing the particle extinction characters are compared

    文章首先回顧了微粒消光研究的發展歷程，接著對目前微粒消光的各種計算方法進行評價和比較。
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