時基線 的英文怎麼說
中文拼音 [shíjīxiàn]
時基線
英文
baseline-
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 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。Results the qol measured at baseline, 3 months and 6 months increased significantly by uni - variate test of repetitive measure anova
結果單變量重復測量方差分析結果顯示,在治療后3個月、 6個月時生命質量各個指標和總分與基線相比均有顯著變化,並呈現線性趨勢。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。8b / 10b encoding adapt the characteristic of fiber channel very well, it has been used in high - speed fiber transmission broadly. it avoids the appearance of continuous “ 1 ”, “ 0 ”, offers plenty of bit synchronization time information, enhances the stability of output light signal, reduces interference between signals and offers proper redundancy to check error through transmission
它避免了連「 1 」 、連「 0 」碼的出現,提供了豐富的位同步定時信息,減少了直流基線漂移,提高了光輸出功率的穩定性,減少了高低頻分量,改善了信號間的串擾,提供了適當的冗餘,便於檢測系統傳輸中帶來的錯誤。Around 40 ; the neutral curve obtained by the growth rates of the temperature fluctuation has a ringlike curve separated from the main branch of nachtsheim s calculation by velocity fluctuation at the lower grashof number side ; and its phase velocity is close to the maximum mean velocity where the critical layer of the eigenmode locates. the thermal fluctuation decays rapidly as the nondimensional frequency above 0. 4, so that it means that the coupling effect between instability wave generated by buoyancy fluctuation and velocity waves by invicid instability seems weak enough for their critical layers in the range of the nondimensional frequency
詳細研究了自然對流邊界層中最早失穩的浮力振型的功率譜波長波速與臨界層位置等基本特徵和它為主導其他振型尚未失穩時按線性理論得到的3種相互獨立振型的振幅分佈。系統地測量了它所對應的溫度和速度漲落的振幅增長規律和中性曲線,實驗結果表明,溫度漲落的中性曲線在低格拉斯霍夫grashof數Z - tranformation augmented fasf algorithm proposed in the dissertation can reduce the search space of integer ambiguity effectively, improve the effiency and real - time processing ability of integer ambiguity resolution ; it is essential to analyse the reliability of integer ambiguity after it was fixed, the ratio test algorithm proposed in the dissertation can reduce the time to fix new integer ambiguity after wrong fixes are detected ; to reduce further the number of epochs required for ambiguity resolution, that the baseline length constraint information which acts as observables is used to do kalman filtering to speed up ambiguity resolution is proposed
本文提出的z變換增強fasf演算法能有效的減小模糊值搜索空間,提高整周模糊值解算的速度和實時性;整周模糊值確定后,需要對整周模糊值的可靠性進行分析,本文提出的比率檢測演算法能有效的減少整周模糊值錯誤確定后整周模糊值二次解算所需要的時間;為了進一步減少整周模糊值解算所需的歷元數目,本文提出把基線長度先驗信息作為觀測量進行卡爾曼濾波輔助整周模糊值求解。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。Considering the similitude law for shaking table test, we study the test results and obtain some conclusions which are a ) generally, the silty soil in test box liquefies and the liquefied time has relation with the amplitude of acceleration, b ) when the intensity is on and above eight degree, the silty soil deposit will be liquefied dramatically, c ) the relationship of the pore water pressure is relevant to the cycle loading which represents when the cycle loading ranges from little to great, the relationship is represent as a concave curve, or else as a protruding curve and tends to stability. ( 3 ) based on the triaxial compression test and the resonant column test, some studies are made such as a ) the duncan - chang parameters of constitutive model, b ) the dynamic shear modulus ratio and c ) the damping ratio of the site soil deposits. in order to deal with the test data, a computer program is compiled
( 2 )利用小型振動臺進行了k _ 0固結狀態下粉土的振動液化模擬研究,通過分析正弦荷載作用下的試驗資料,驗證了粉土的孔隙水壓力增長模式的合理性;從微分方程推導了基於土體振動臺模型試驗的相似律,並從模型實體、孔壓時程曲線和相似律等方面做出了分析,得出了如下結論:在小型振動臺試驗中,模型箱中的粉土都發生了液化,液化的時刻和輸入加速度幅值有關,而對頻率的變化不太敏感;粉土在相當於8 9度地震烈度的加速度幅值作用下可能產生嚴重的液化;孔壓的增長曲線形狀與施加的荷載有關:當施加荷載為由小到大的形式時,曲線形狀為上凹的曲線;當施加荷載為等幅的正弦荷載或荷載幅值由大到小時,曲線形狀為上凸的曲線,且逐漸趨于穩定。Through simulation, the influence of antenna baseline and time error to the algorithm performance is analyzed
通過數值模擬,進一步分析了天線基線,時間誤差等因素對演算法定位性能的影響。The thesis devote to desams ( double - channel electro - hydraulic servo adaptive motor simulator - rig ) condition monitoring and accessing in theory and application. based on short signal analysis theory, the thesis explores the representative vibration faults of complex and non - linear equipment by both theoretical and experimental methods systematically
本文基於簡訊號分析技術,針對電液伺服道路模擬試驗臺運行狀態監測和狀態評價,對簡訊號的最大熵譜分析技術在自復雜非線性系統的實時在線故障診斷領域的應用進行了系統的理論和實驗研究。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。An ir - based real - time on - line monitoring system for the temperature of kiln shell
基於紅外技術的窯胴體溫度實時在線監測系統Effect of time base line adjusted by use of lateral holes on defect positioned accuracy
利用橫孔調節時基線對缺陷定位精度的影響Expanded time - base sweep
時基線展寬Linearity of time base
時基線性分享友人