fluctuation measurement 中文意思是什麼

fluctuation measurement 解釋
脈動測量
  • fluctuation : n. 1. 波動,起伏,漲落;【物理學】脈動。2. 動搖不定,躊躇。3. 【生物學】彷徨變異。
  • measurement : n. 1. 測量,計量,量度。2. 份量,尺寸,大小,寬度,厚度,深度(等)。3. 測量法。 measurement goods (按體積、容積計算的)體積貨物。
  1. Finally, coupled chaotic system is realized to measure the fluctuation of magnetic field. meanwhile, it is proved that coupled chaotic system could be used to reduce noise. this experiment also finds an efficient approach for noise reduction in chaotic measurement

    最後把耦合混沌測量系統用於磁場測量中,實現用多個混沌電路耦合的系統測量微弱的磁場變化,證實了耦合混沌系統有較好的抗干擾能力的結論,為混沌測量的抗干擾措施找到了一條比較有效的途徑。
  2. The measurement was made on a gas - solid fluidized bed in our laboratory. the pressure fluctuation signals were obtained and analyzed through power spectrum density. the relation of the particle size to pressure fluctuation and other parameters was studied by using fuzzy set theory

    在實驗室條件下對氣-固流化床的顆粒進行了測量,通過功率譜密度對所獲得的壓力波動進行了分析,並應用模糊集理論對顆粒尺寸與壓力波動及其它影響參數的關系進行了研究。
  3. It is necessary to obtain performance data correctly and effectively for well designing, managing and applying network. performance measurement technology is the only effective way to obtain performance data correctly and effectively. it obtained network ' s correct performance characteristics by measuring the available bandwidth, delay and lost of packets, and monitoring the congest and traffic fluctuation etc. it is the base of designing, managing and applying network and very important for them

    要設計、管理和利用好網路,必須要求有效地獲取性能特徵方面的準確數據,網路性能測試技術是準確而有效地獲取性能特徵的唯一手段,它通過對網路實際和有效帶寬、數據包的延遲和丟失等的測試以及對網路擁塞、數據的突發性等運行狀況的監測,獲得網路性能特徵的準確數據,從而對網路的設計、管理和應用起著非常重要的作用。
  4. With the measurement results of the system, the analysis conclusion of speed fluctuation is particularly applied to the selection of control policy for ignition timing of motorcycle electronic controlled igniting system. as a conclusion, the paper points out finally that different policy should be applied according to different rotating speed

    本文講述了該系統的軟硬體實現,並利用該系統的測量結果,獨特地將轉速波動的分析結論應用到摩托車電控點火提前角的控制策略的選擇中,指出隨著摩托車發動機轉速的不同,應該採用不同的點火時刻控制策略。
  5. The prediction of propeller - induced hull pressure fluctuation in non - uniform flow is studied by using theoretical calculation and model experiment systematically. an intact method and computer program for the prediction of unsteady cavitating propeller - induced hull pressure fluctuation in non - uniform flow is set up in this paper. the measurement of propeller induced hull pressure fluctuation in depressurized towing tank carried out in this paper is the first time inland

    本文從理論計算和模型試驗兩個方面系統地研究了不均勻流場中螺旋槳空泡誘導的船體表面脈動壓力的預報問題,建立了一套完整的預報非定常空泡螺旋槳誘導的船體表面脈動壓力的方法和程序,並在國內首次完成了在減壓拖曳水池中進行空泡螺旋槳誘導的船體表面脈動壓力測試。
  6. In this paper, it is introduced to the influence of cavitation factor, measurement taps, sampling frequency and sampling time on the test result in pressure fluctuation test of the water turbine

    摘要介紹了水輪機壓力脈動試驗時空化系數、測量位置及測點、信號采樣頻率及采樣時間等因素對試驗結果的影響。
  7. Experimental measurement of air flow velocity fluctuation of wind - sand flux

    風沙流中風速脈動的實驗測量
  8. According to the definitions of bottleneck bandwidth, available bandwidth and bulk transfer capacity, we analyzed the algorithms which named vps ( variable packet size ), pptd ( packet pair / train dispersion ), slops ( self - loading periodic streams ) and topp ( trains of packet pairs ) ; based on the principle of sub - path bottleneck measurement, we developed the bottleneck measurement algorithm using heterogenous packet - pair train ; after designing the three child algorithms ( demarcating bandwidth range, approaching bandwidth value and predicting the trendency of available bandwidth fluctuation ), we performed the algorithm called self - loading binary search ; applying the multi - home properties of sctp ( stream controltransmission protocol ) and measurement algorithm of available bandwidth, we presented a scheme to adjust the sctp transport path when there are network congestions or faults ; by the library of winsock and winpcap, we developed a measurement program to look for bottleneck bandwidth. in ns2 experiments, the algorithm based on heterogenous packet - pair train fitted well, and the algorithm of self - loading binary search worked quickly, and the sctp scheme improved the throughput effectively

    本文根據瓶頸帶寬、可用帶寬和btc ( bulktransfercapacity )三類網路帶寬定義,分析了vps ( variablepacketsize )和pptd ( packetpair / traindispersion )瓶頸帶寬測試演算法, slops ( self - loadingperiodicstreams )和topp ( trainsofpacketpairs )可用帶寬測試演算法;基於子路徑瓶頸測試原理,設計了異構包對序列的瓶頸測試演算法;並結合三個子演算法(界定帶寬范圍演算法、接近帶寬值演算法和帶寬變化趨勢判定演算法) ,設計了自載流折半查找的可用帶寬測試演算法;把上面的演算法應用到sctp ( streamcontroltransmissionprotocal )的多宿性和可用帶寬測試,提出了一個網路擁塞或故障時調整sctp傳輸路徑的方案;結合winsock和winpcap兩套網路開發工具,設計了一個瓶頸帶寬測試程序;通過ns2模擬實驗,驗證了基於異構包對序列瓶頸測試演算法的準確性、自載流折半查找演算法的快速性,和sctp改進方案的有效性。
  9. The better agreement between the calculated value and the measurement result of propeller - induced hull pressure fluctuation proves that the program in this paper can be suitable for engineering application

    經與空泡水洞中螺旋槳模型脈動壓力測試結果比較,表明本文的計算程序可以用於工程實際。
  10. Electromagnetic compatibility testing and measurement techniques voltage fluctuation immunity test

    電磁兼容試驗和測量技術電壓波動抗擾度試驗
  11. Abstract : the simulated calculation and analysis of the fluctuation of the instantaneous speed of a diesel engine are presented. the important factors, influencing the measurement precision of the instantaneous speed, are discussed. the correct measurement method is presented. the instantaneous speeds of diesel engine are measured and processed in a laboratory condition. compared the simulated instantaneous speed with the measured instantaneous speed, the simulated result is correspondence with the measured result. the characteristic parameters and the criteria of the instantaneous speed for detecting the leakage of valves in diesel engine are provided, and diagnosis accuracy is confirmed on 4120sg diesel engine

    文摘:對瞬時轉速波動進行了模擬分析計算;實測了發動機的瞬時轉速;對比了實測與模擬計算的瞬時轉速波形,兩者相當一致;討論了影響瞬時轉速測量精度的關鍵因素;提出利用瞬時轉速進行故障診斷的特徵參數及判據,並在診斷4120sg型柴油機氣門漏氣故障中得到證實
  12. The simulated calculation and analysis of the fluctuation of the instantaneous speed of a diesel engine are presented. the important factors, influencing the measurement precision of the instantaneous speed, are discussed. the correct measurement method is presented. the instantaneous speeds of diesel engine are measured and processed in a laboratory condition. compared the simulated instantaneous speed with the measured instantaneous speed, the simulated result is correspondence with the measured result. the characteristic parameters and the criteria of the instantaneous speed for detecting the leakage of valves in diesel engine are provided, and diagnosis accuracy is confirmed on 4120sg diesel engine

    對瞬時轉速波動進行了模擬分析計算;實測了發動機的瞬時轉速;對比了實測與模擬計算的瞬時轉速波形,兩者相當一致;討論了影響瞬時轉速測量精度的關鍵因素;提出利用瞬時轉速進行故障診斷的特徵參數及判據,並在診斷4120sg型柴油機氣門漏氣故障中得到證實
  13. Experimental results on butane and butane - plant oil flames indicated that, measurement precision by the multi - wavelength method is strengthened by taking radiation information on multiple wavelength units into consideration, and moreover, the radiation calibration procedure is simplified, in that a halogen light source is used instead of in situ flame radiation. in section 2, fluctuation and averaging analyses are carried out on optical transmission signals by particles passed through laser beams to derive particle size and concentration in measuring area, furthermore, correlation calculations are conducted on two adjacent laser beam signals to obtain flowing velocity of particle

    對丁烷氣體火焰及丁烷-植物油混合燃料火焰的測量結果表明,多波長分析方法優于傳統的雙色法,表現在兩個方面:一、由於綜合考慮多個波長單元上的火焰輻射信息,多波長方法的測量精度比雙色法有較大的提高;二、在多波長分析方法中,採用標準鹵素燈進行相對輻射強度標定,簡化了雙色法中的火焰絕對輻射強度的標定。
  14. In the study, fft and digital filtering calculations are employed to assure measurement precision. experimental studies from industrial systems demonstrated that, fluctuation and correlation methods can be applied on non - spherical opaque particles, the precision are are within 10 % and 8 % respectively

    多處工業現場和自製兩相流試驗系統的測量結果表明,測量顆粒濃度和粒徑的精度在10以內,速度測量精度在8以內,證明這種技術可以用於非球形、不透明顆粒的測量。
  15. Using optic fiber sensor and pressure sensor to detect pressure fluctuation, pressure difference and particle concentration signals in order to study the characters of the bed under low velocity. attractor and fluctuation complexity theory are used in this paper. attractor analysis testifies phase space theory of takens : measurement and analysis one state variable can reflect the qualitative character of the whole system

    在本文的最後,通過光纖、壓力傳感器同時獲取同一操作條件下不同位置顆浙江人學碩士學位論文粒濃度、壓差、壓力信號時間序列進行了吸引子和漲落復雜性研究,證實了takens的相空間嵌入原理:即一個狀態變量進行測量就可以反映整個系統的定性性質。
  16. To research the issues measurement models and analysis methods of power quality, we put forward an analytical opinion in this paper. following fluctuation of power system, which amends parameters deviation in accordance with fundamental component

    本文通過對電能質量的指標、測量模型以及各種電能質量分析方法的深入研究,提出了一種實時跟蹤電壓基波分量參數的變化,獲取幅值、頻率、相角的實時數據,修正偏差的分析思路。
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