計時基線 的英文怎麼說
中文拼音 [jìshíjīxiàn]
計時基線
英文
base line-
The prime meridian, which runs through greenwich in south - east london, became the basis for the world ' s time keeping in 1884 after the first astronomer royal, john flamstead, calculated that the earth rotated on its axis once every 24 hours
1884年，首位皇家天文學家約翰法蘭姆斯坦算出地球每隔24小時繞軸自轉1次，使得通過倫敦東南格林威治的本初子午線成為全球計時基準。In the third chapter, with a view of the real - time and reliability and the saving of system resource, the system of asynchronous serial communication is designed successfully based on the multi - thread technology and message mechanism with delphi developing tool, the communication is very well between the greasers and the pc
第三章以實時性、可靠性以及系統資源節約為著眼點，採用delphi作為編程語言，成功的設計了基於多線程與消息機制的通信系統，實現了現場加油機和后臺管理機之間及時可靠的數據傳輸。In view of the drawback of the existing models, a novel geometrical based spatial - temporal hybrid - path channel model is proposed for multiple antennas system
基於現有模型的不足，提出了一種基於幾何結構的混合路徑空時無線通道統計模型。Aiming at the non - linear links such as time lag, inertia, dead time and saturation within the turbine regulating system, a fuzzy - immune - pid control system was designed based on a mutative scale chaos optimization method, the principium of immune feedback system and the theory of fuzzy control
摘要針對汽輪機調速系統中存在的時滯、慣性、死區和飽和等非線性環節，採用模糊控制理論，結合免疫反饋機理，設計了基於變尺度混沌優化策略的模糊免疫pid控制系統。In verifying of relay protection sensitivities, a network portioning method combining with graphic interface is proposed. it can online track the varieties of network, accordingly it can satisfy real - time and emulation analysis of topological configuration. with the real - time network configuration and nodal admittance matrix analyzed, the short - circuit calculation is carried out ; by means of an expert system, the verification of protection sensitivities has been achieved
在網路拓撲在線快速跟蹤基礎上，進行實時結線分析並形成導納矩陣，同時將短路計算的理論運用於在線，將獲得的在線短路計算的結果同專家系統相結合進行保護靈敏度的在線校驗，最後通過友好的人機交互界面提供整個城市電網全部投運保護裝置的保護靈敏度狀況。The above system realized the autogeneration of the membership functions and the control rules, greatly lessened the design period of the ventilation control system, and make it possible to on - line modify the control rules
本文提出的神經模糊控制系統實現了公路隧道縱向全射流通風模糊控制模型隸屬函數和控制規則的自動生成，大大縮短了控制系統的設計時間，為通風控制系統的實時在線修改奠定了基礎。During the instantaneous frequency estimation of lfm, there exists some error in the edge, so in the dissertation, a fitting method is proposed to modify it. from the computer simulation, the following result is obtained : for cw, the method based on cwt is most effective, and with the snr rising, the error curve of it is more and more closer to crb. for lfm, the method based on wvd gives the best result, and the effects of cwt and stft are similar for multi - component signal, compared to stft and wvd, cwt is a better choice
通過模擬發現，在單頻回波的瞬時頻率估計中，基於cwt的方法最為有效，隨著信噪比的提高，其均方誤差曲線越來越接近克拉美?羅界；在線性調頻回波的瞬時頻率估計中， wvd法得到的效果最好，而cwt與stft法的估計效果比較接近；在多分量信號的瞬時頻率估計中，相對于stft和wvd法， cwt法是一個更好的選擇。It is one foundational work of large - scale construction and enormous investment. the departments of the highway design must be required to make decision according to the indexes, such as rational highway capacity, level of service and road alignments, etc. if not, the huge wasting and back - end ecocatastrophe will be brought
這是一項建設規模宏大、投資規模巨大的基礎工程，要求各級部門在公路設計時，必須依據合理的公路通行能力、服務水平、道路線形等指標來確定，防止工程投資的巨額浪費和後期的生態災難。On the basis of the theory of fractal geometry, the fractal dimension characters of ae signal at different tool wear states were analyzed, an algorithm was provided to decide the scale range which is necessary to calculate the dimension of non - fully - fractal form. the experiments showed that the fractal dimension of ae signal is slightly effected by the changes of cutting parameters ; the variance of the fractal dimensions, which reflects the geometric characters of ae signals, has the same tendency as that of the flank wear, the monitoring system, which takes the fractal dimension of the ae signal as the feature, can identify the different tool wear states more correctly under different cutting conditions
以分形幾何理論為基礎，對刀具不同磨損階段聲發射信號的分形特徵進行分析.提出了計算非完全分形體信號波形的關聯維數時尺度范圍的確定方法，分析了聲發射信號在刀具磨損過程中分形維數的變化特性.刀具磨損切削實驗數據表明，聲發射信號的分形維數受切削參數變化影響較小；分形維數反映了聲發射信號的幾何特徵，其大小能較好地反映刀具的不同磨損狀態.實驗結果表明，該方法能正確地實時在線監測刀具的不同磨損狀態This study made a conclusion ? amely in order to realize following the geological target while drilling, on the basis of making a better geological and drilling design for horizontal well, we must make full use of mwd, lwd and integrate logging to carry out lithfacy identifying in real time, the lwd interpretation and formation evaluation, to set up geological model of target formation, to select geosteering marked formation and compare simulative curves with lwd curves f to fix on the drilling direction of bit upper and declination, the position in target oil - gas layer, to revise borehole track in real time, to make it extend in reservoir better interval as possible
研究認為，在做好水平井地質設計和鉆井設計的基礎上，要實現隨鉆跟蹤地質目標鉆井，必須充分利用隨鉆測量、隨鉆測井和錄井等資料，從實時巖性識別、隨鉆測井解釋和地層評價、目標層地質模型建立、導向標志層的選取及模擬曲線對比等方面入手，確定鉆頭上下傾鉆進方向及在目標層中的位置，以實時調整井眼軌跡，使其盡可能在儲層物性較好的部位延伸。Based on nonlinear finite element theory, stress and deformation behaviors are analyzed after ground stabilization and foundation pit reinforcement with deep mixing method. by comparison of the conditions of treatment and non - treatment of two examples respectively, the results indicate that the match ratio scheme used for deep mixing method is more ideal when soft clay is stabilized in this area of fuzhou in the thesis. this scheme not only can fully utilize industrial waste material, but also can economize construction cost
對于加固土的工程特性，本文以非線性有限元理論為基礎，模擬分析水泥攪拌樁加固地基和基坑支護加固的應力和變形情況；通過兩個例子分別在有處理和無處理情況下的對比，利用固化劑最佳摻入比來設計地基處理方案，並運用非線性有限元方法計算出土體內大小主應力的分佈情況以及變形情況，結果表明本文所得出的配合比方案用於深層攪拌樁法來對福州地區軟粘土進行地基加固時還是比較理想的，這樣不僅充分利用工業廢料，還可節約工程造價。Based on the experimental data of rotor steel 1crmov in the loading of low - cycle fatigue at high temperature, the strength behavior and the fatigue life curve of this material at 550 have been achieved. meanwhile, with respect to three kinds of notched bar, their material damage assessment method under multiaxial stress condition is discussed
本文在1crmov材料的高溫低周疲勞實驗數據進行了整理和統計的基礎上，得到了材料的疲勞強度特性曲線和疲勞壽命曲線，同時對三種不同缺口形式的圓柱形試件進行了多軸應力狀態下的材料損傷的研究，並通過數值計算方法進行了疲勞壽命評估。Gps is a planet wireless conductance system which is global and all - weather, gps can offer high precision time orientation information to infinite user, clock precision reachs 10 ? 6 magnitude 。 not only changes traditional time method of quartz crystal clock, but also replaces wireless shortwave and even more lowfrequency signal and tv signal whose overlay range is limited and low precision, offers advantage to geology field task, achieve automatization and high precision of seismic flow observation
利用gps授時信號全方位、全天候、連續性、實時性和高精度的特點，以gps信號為基準來校準本地時鐘（晶體振蕩時鐘或原子鐘） ，將gps接收機輸出信號的長期穩定度和恆溫晶振的短期穩定度相結合，應用大規模可編程邏輯器件，設計和實現了由pc104控制的實時在線授時系統。A counter with timing fiducial oscillator acts as a frequency multiplier, and the count value in the prior period is taken as the reference for the current period to give the decimal part of a signal period
該方法利用帶基準時基的數字計數器實現周期內線性細分，當前周期信號將前一整周期的倍頻數作為參考構成信號周期的小數部分。For special example, the closed form solutions for complex potentials in matrix and inhmogeneity regions are derived explicitly when interface containing single crack or rigid line, and the appropriate expressions of the electro - elastic field intensity factors at the tip of crack or rigid line are examined
作為特例，求出了界面含一條裂紋或剛性線夾雜時基體和夾雜區域復勢的封閉形式解；同時計算了界面裂紋和剛性線尖端應力和電位移場強度因子。( 5 ) intersecting point distribution between every cross - section of both hull and damaged compartment under arbitrary floatation and waterline with 2d offsets is given particularly. calculation of underwater geometric properties of both hull and compartment is treated as one process, the same to calculation of ship floatation, intact stability and damaged stability
（ 5 ）本文給出了基於剖面曲線的積分計算模型中任意浮態下的船體及破損艙的每個橫剖面與水線的交點分佈，並將完整船舶與破損艙室在任意浮態時水線下的要素計算、完整船舶與破損船舶的浮態計算與穩性計算分別統一為一個過程。The paper focused on this task and covered these contents : realizing the real - time, online and dynamic simulation of the pneumatic operation system for marine main engine on the basis of analyzing the pneumatic devices " principle and by the means of multimedia technology ; describing dynamically the flowing direction of the controlling pneumatic line according to its logical relations in the three working conditions - starting, stopping and reversing
本文圍繞此課題主要完成以下內容：在對manb & w主機氣動裝置原理分析基礎上，運用計算機多媒體技術，實現船舶主機氣動控制系統的實時、在線、動態模擬。針對主機的起動、停車、換向三種操作工況，依據氣路邏輯關系動態地描述了控制氣路的流向。Furthermore, it is very important that improve the autoimmunization of substation without watch - keeper. in the design of substation, we predigest main wiring with a minitype base and adopt simple wire - connection : dule t type is used in 66kv side, segmented single bus - bar with hospital bus - bar is used in l0kv for major load
在該無人值班變電所的設計中，以小型化模式為基礎，簡化主接線： 66kv側採用雙t接線方式，正常時雙線雙變壓器分列運行； 10kv側由於饋電線路較多，負荷較為重要，因此採用單母線分段帶旁路接線方式。Considering the above control strategies which make the controller can not be real - time processing because its workload has increased, control circuits of the main switches based on eprom are designed, which can implement control scheme of firing angles and phase voltage. furthermore, it avoids power converter saturation in the process of commutation
上述控制策略的引入造成控制器運算量增大、難以在線實時控制，又設計了基於eprom的主開關器件通斷控制電路，實現了開關磁阻電動機開通關斷角控制及對施加於相繞組上電壓的優化控制，同時避免了換相時可能引起的功率變換器飽和現象。Based on such reasons, in this dissertation, some research on mimo radio channel modeling was done, and we proposed a stochastic mimo channel model which could serve as a generalized mimo radio channel model in mimo technology research
基於上述原因，本文研究了現有應用環境下mimo無線通信系統的通道建模理論與方法，綜合了一個寬帶統計mimo無線通道模型，可以作為研究mimo無線通信系統的一個通用空時通道模型。分享友人