speed variation 中文意思是什麼

speed variation 解釋
速度變動
  • speed : n 1 快，迅速。2 速率，速度。3 （汽車的）變速器，排擋。4 （膠片，照相紙）感光速度。5 〈古語〉興隆...
  • variation : n 1 變化，變動。2 變量，變度，偏差。3 【語言】語尾變化；變體，異體；【數學】變分，協變；順列；【...
  1. 2 ） this paper research mainly the influence of the cluster satellite circumnavigation 、 earth - rotation 、 satellite attitude to the baseline variation and the speed measurement accuracy, and give the correcting mathematical formula and the relative curvature

    2 ） 、著重分析分散式衛星sar系統中衛星環繞、地球自轉、衛星姿態對基線、測速精度的影響，並繪出了相應的數學模型及關系曲線。
  2. The method proposed in this thesis do well in solving the problems of multi - damping - ratio - spectra simulation. it is convenient to obtain the pareto optimal solution set of the multi - object question by using implicit parallel genetic algorithms and the method can meet the practical needs for simulating ground motions coinciding with multi - damping - ratio - spectra in seismic design. the crossing rate and variance rate are important parameters of genetic algorithms which affect the rate of convergence, the adapting rate of cross and variation in this paper can auto - adapt and according to stand or fall of current sample, it assures the sample approach to the pareto optimal solution set in fast convergent speed

    較好地解決多阻尼比反應譜擬合問題；本文方法通過一次運行就能獲得一組具有集系特性的地震動，在擬合多阻尼比反應譜的人造地震波集系的模擬方面有傳統方法所不能比擬的優勢，產生的人造波或人造波集系可滿足工程抗震設計需要；在遺傳演算法中，交叉概率和變異概率是影響收斂速度的重要參數，本文採用的改進自適應交叉概率和變異概率，可以根據當前樣本的好壞程度來自動地選擇適當的交叉概率和變異概率，以保證演算法始終以較好的速度向pareto最優解集逼近。
  3. As long as the truck is moving in a straight line, the ring gear, differential gears, and drive axles turn together without variation of speed

    當卡車直線行駛的時候，環形齒輪，差速器齒輪和驅動軸便會無變速的一起轉動。
  4. The variation of wind speed dominates the variation of latent heat flux eventually

    感熱通量的變化主要由海氣溫差的變化主導。
  5. This thesis introduces the base theory and correlative information of variable frequency speed variation, and expatiates sinusoidal pulse width modulation ( spwm ). the principle of svpwm is in - depth discussed, and a simple algorithm for svpwm is ratiocinated

    本文介紹了交流變頻調速的發展概況，分析了其基本原理，闡述了正弦脈寬調制（ spwm ）原理，對svpwm理論進行了研究，給出了svpwm的簡單實現演算法。
  6. It shows that the injection quantity and the difference of temperature distribute as a parabola which is at the same load, and the minimum of the parabola corresponds to the optimum quantity of injection ( g ). under the condition that the quantity of injected mass, the air speed and the heat quantity is respectively g, v and q, the research demonstrates that the pentium iv chip ' s temperature variation can be controlled under 40c and work normally when the wind speed overpass 1. 5m / s and the power dissipation of the chip is 60w. otherwise this paper calculates the flooding limit of thermosiphon with several different methods

    對其充灌量、散熱量、電子元件（ cpu模擬晶元）表面與環境溫度之差及通風、流速的影響進行了系統的測試，發現充液量與溫差的關系在負荷不變時呈拋物線分佈，其極小值點對應的充液量是最佳充液量g 。在充液量為g時，對風速v 、散熱量q進行的研究表明，當風速超過1 . 5m / s后，奔騰晶元在60w發熱條件下晶元溫度小於40 ，能滿足長期正常工作。
  7. Yct series eddy - current coupling drives are ac speed - regulation motors, which are featured by easy contorl and stepless speed variation within a wide speed range

    Yct系列電磁調速電動機由拖動電機、電磁轉差離合器、測驗速發電機和電磁調速控制器組成。
  8. Originating airport name, metar speci issue time, wind direction speed gust, wind direction variation, visibility, runway visual range, weather during time of observation, cloud, air temperature dew - point, qnh pressure measured at airport with adjustment made to suit aeronautical use, weather during the past hour but not at time of observation, wind shear information, trend - type landing forecast

    發出資料的機場名稱發出metar speci的時間風向風速陣風風向轉變能見度跑道視程觀測時的天氣雲層氣溫露點qnh在機場錄得的氣壓，經調整以配合航空用途過去一小時但非觀測時的天氣風切變資料飛機降落用的趨勢預測。
  9. It is found that the climatological mean of wind speed and air - sea humidity difference are both large, the variation of wind speed are almost in phase with air - sea humidity difference, yielding much larger or smaller latent heat flux. so the ocean release the most latent heat in its own winter of the two hemispheres when both wind speed and air - sea humidity difference are large

    發現在南北兩信風區，風速和海氣濕度差的變化幾乎是同位相的，平均背景風速和海氣濕度差都較大，他們互相加強彼此對潛熱通量變化的貢獻，所以海洋潛熱損失最大是發生信風南北兩區的各自風速和海氣濕度差都較大的冬季。
  10. In the region north of brazil, although both wind speed and air - sea humidity difference have dramatic variations, the variation of latent heat flux is just ordinary in magnitude. the reason is that the variations of wind speed and air - sea humidity difference are out of phase with each other so that they decrease each other greatly

    在巴西以北的暖水區，盡管海氣濕度差的變化和風速的變化都較大，但二者在區域內總是反相，彼此削弱了對潛熱通量變化的貢獻，所以該區潛熱通量的變化振幅較小，最終由風速的變化主導潛熱通量的變化。
  11. Speed variation of each roll by means of two potentiometers on the control cabinet

    控制面板上兩個旋鈕直接控制輥速度。
  12. The variation of regional stress field can be genetically interpreted by the rotation speed variation of the earth and its impact on the movement of lithosphere plate and deep processes of the earth, it is also related to the earlier structural feature and boundary of the basin

    區域應力場變化可以用地球自轉速度變化引起的巖石圈板塊活動及觸發的深部過程來解釋，亦與先期構造形跡和盆地邊界條件有關。
  13. Comparing the real electromagnetism torque and the ideal electromagnetism torque, we can find the trend of the speed variation, and then we can control the motor properly

    實際電磁轉矩與理想電磁轉矩相比較，即可得到電機轉速的變化趨勢。
  14. Coefficient of travel speed variation

    行程速度變化系數
  15. 3. automatic counting for feeding length, infinite speed variation, coating and lamination can be completed at one time

    3走料長度自動計數，變頻無級調速，塗布復合一次完成。
  16. The core patented know - how of double - locker, steel - wire ropes of 3, 5, 7, 10, 15, 20, 30, 40 8 different lengths are packed in the case and can be pulled out to use at will during work. in case of fall - off, it will automatically lock with the speed variation to stop falling

    雙鎖止裝置專利核心技術，盒內裝有3 5 7 10 15 20 30 40米8種長度的鋼絲繩，作業時可隨意拉出使用，當發生墜落時，因速度變化自動鎖止，阻止墜落。
  17. This paper simulates and analyses the torque pulsation because of the modulation frequency and speed variation under ambipolar pulse width modulation, at the same time the results are given

    本文對雙極性調制的無刷直流電動機模擬分析了轉速和調制頻率對轉矩影響同時給出模擬結果。
  18. This paper simulates and analyses the torque pulsation because of the modulation frequency and speed variation under ambipolar pulse width modulation ; the influence of snubber circuit, dead time effects, and modulation frequency to igbt pwm inverterbridge is taken into account, too

    本文對雙極性調制的無刷直流電動機模擬，分析了轉速和調制頻率對轉矩影響；並綜合考慮緩沖電路、控制死區及載波頻率對pwm逆變電路中igbt開關損耗的影響。
  19. These sensors establish ignition and fuel injection timing, and monitor crankshaft speed variation

    這些傳感器（的信號）來對點火、燃油噴射定時和曲軸速度變化監控。
  20. In the recent 20 years, with the appearance of the new power electron apparatus and microprocessor and the development of the control theory on the alternating current ( ac ) motor, the technology of variable frequency speed variation has improved rapidly

    近20年來，隨著新的電力電子器件和微處理器的推出以及交流電機控制理論的發展，交流變頻調速技術取得了巨大的技術進步。
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