長周期振動 的英文怎麼說

中文拼音 [zhǎngzhōuqīzhèndòng]
長周期振動 英文
long-period oscillation
  • 長 : 長Ⅰ形容詞1 （年紀較大） older; elder; senior 2 （排行最大） eldest; oldest Ⅱ名詞（領導人） chief;...
  • 周 : Ⅰ名詞1 （圈子; 周圍） circumference; periphery; circuit 2 （星期） week 3 [電學] （周波的簡稱） c...
  • 期 : 期名詞[書面語]1. （一周年） a full year; anniversary 2. （一整月） a full month
  • 振 : 動詞1. （搖動; 揮動） shake; flap; wield 2. （奮起） brace up; rise with force and spirit
  • 振動 : vibrate; vibration; vibrance; vibrancy; vibra; vibes; shaking; rumble; jitter; chatter; sway; jar...
  1. The stiff floor structure has bigger displacement and smaller internal forces. under seismic forces, frame with eiastic fioor has bigger vibration period, and takes on complicated modes of vibration. due to the big vertical rotation, structure with elastic floor shows more prominently coupling vibration of bending rotating and twisting

    如，彈性樓板的結構位移比剛性樓板結構的位移大，內力也是彈性樓板結構的大；在地震力作用下，考慮彈性樓板變形的空間框架振動周期比剛性樓板框架長，而且其振型表現得也比較復雜，由於豎向扭轉位移較大，彈性樓板結構表現出更明顯的彎扭耦聯振動。
  2. This isi series oscillation has following characters : ( 1 ) long term cycle duration, whose duration of most oscillations ranged from 3 0 - 120ms, so we called it slow wave oscillation ; ( 2 ) large amplitude of oscillation, the minimum isi is about 2ms while the maximum is beyond 40ms, which suggested that the firing frequency vary from several tens to hundred hz ; ( 3 ) abrupt turn always occurs during the continuous change in isi, this turn is called inflexion temporarily

    該振蕩波有下述特徵： （ 1 ）振蕩周期較長，多數在30 ? 120s范圍，故稱慢波振蕩； （ 2 ）振蕩幅度較大，其isi振蕩最小值在zms左右，最大值可達40ms ，表明放電頻率可在幾十到幾百k范圍內變動； （ 3 ）在isi連續變化過程中往往出現突然轉折，暫稱其為拐點。
  3. The numerical results indicate that the deformation within the solid inner core is very small. however, in the fluid outer core, the changes of the displacement with relatively low spherical harmonic degree ( n < 10 ) is very complicated via the radius, due to the resonance near the eigenfrequenies of the core long - period oscillations. while the spherical harmonic degree of the loading is larger than 10, the deformation and the gravitational perturbation in the core are very small, and the earth ' s deformation response is dominantly represented as the radial displacement in the elastic mantle

    研究了地球在日月引潮力和表面負荷作用下的形變特徵，數值計算結果表明，在固體內核中的形變很小，由於在長周期核模本徵頻率附近的共振，液核中低階（ n 10 ）位移隨半徑的變化非常復雜，當負荷階數超過10時，地核中的形變和擾動位都很小，地球的響應主要表現為彈性地幔中的徑向位移，且隨深度增加急劇減弱，地表負荷love數與信號頻率的依賴關系很弱，給出了體潮love數計算的一種有效的近似處理方案。
  4. The result shows that the liquid sloshing appears as long period and combination of multi - modes

    結果表明：罐內液體的晃動是長周期運動，並且是多階振型的組合。
  5. Abrasion - resisting, anti - oxidation, strengthen lubricating effect, improve smoothness of transmission, extend cycle of oil change, disperse greasy filth and colloidal, restore sealing performance of oil seal, eliminate noise, extend service life

    抗磨，抗氧化，增強潤滑效果，提高傳動平順性，延長換油周期，分散油泥，膠質，恢復油封密封性能，平振降噪。
  6. The wave length of infra - sound is quite long : typical infra - sound from the eye of a typhoon has a 4 to 8 second cycle 0. 25 to 0. 125 hz, meaning that its wavelength is a few kilo - metres long

    次聲波的波長很長，例如臺臺風眼所產生的次聲振動周期約秒0 . 250 . 125赫茲，波長便可達數公里。
  7. But real estate economy then revolves about the long - term growth tendency to fluctuate and vibrate

    而房地產經濟波動則圍繞長期增長趨勢上下起伏、振蕩;房地產經濟波動可分為房地產經濟周期波動與異常波動。
  8. ( 3 ). the flattening arithmetic of an edfa was presented based on the inter - correlative function between the gain spectrum function of the edfa and that of the reserve transmission spectrum of the lpfg. for optimal matching between the two spectra, the flattening arithmetic calculates the variation of the resonant amplitude and wavelength of the lpfg

    Iii .提出了一種動態增益均衡的平坦演算法，這種演算法的本質就是利用摻鉺光纖放大器增益譜函數和新型長周期光纖光柵的透射譜反轉譜函數的相關性，給出新型長周期光纖光柵諧振峰幅度和位置的調節量，使改變后的新型長周期光纖光柵的反轉譜線能和edfa的增益輸出譜線進行最佳匹配。
  9. The effect of opening and closing of joints will weaken the integral stiffness of arch dams, prolong their vibration periods and remarkably readjusting of stresses

    橫縫張合效應將削弱大壩的整體剛度、延長其振動周期、引起顯著的應力重分配。
  10. In industry, about over 80 % damages of the oscillatory components under dynamic loads are caused by the fatigue failure, but with traditional ndt methods, the damages ca n ' t be tested and evaluated before the fatigue crack coming into being, which result in serious accident in the long period running of these equipments

    工業生產中，約有80 %以上受動載荷作用的振動構件破壞是由疲勞失效引發的，而傳統的無損檢測技術無法解決疲勞裂紋形成前損傷的檢測和評價問題，造成設備在長周期運行過程中發生嚴重事故。
  11. The meaning of cqc ( t ) algorithm is the difference in time domain between the peak value location in time axis of input earthquake and model response of structure, which is called delay time. through the delay time calculating of a series of oscillators with different damp ratio and natural vibration frequency, it is found that it will bring biggish error if the cqc algorithm applied on the structure which has long period, and the time dependent cqc ( t ) algorithm could solve the problem easily

    Cqc （ t ）方法的意義在於輸入地震動峰值與結構模態響應峰值在時間軸上的時間差，我們稱之為延遲時間，通過計算具有不同周期和阻尼比結構的延遲時間，發現對于自振周期比較長的結構， cqc方法會帶來比較大的誤差，而基於時程的cqc （ t ）方法能夠解決這個問題。
  12. It was also found that the number of active atoms has relation with the length of border when the growth rate was low, and the number was largest as the length was shortest

    並且發現，在低生長速率情況下，邊界長度與可活動原子數間存在對應的周期性振蕩關系。當邊界長度最小時，可活動原子數為最大;反之，可活動原子數為最小。
  13. As benfield frame is in service, it is impossible to take the method of changing the design of the relational equipments and piping to reduce the vibration, it will take too many times and money

    由於苯菲爾框架已經在役，通過改變相關設備及工藝配管設計來減弱振動的方式，周期太長、損失太大，不可能採用。
  14. Under the horizontal earthquake action and wind force, aim at " the pure frame structure with rectangle columns ", " the pure frame structure with special - shaped columns ", " the frame - truss structure with special - shaped columns " and " frame - shear wall structure with special - shaped columns ", earthquake action analysis was done by the spacial finite element method through the changes structural parameter. analyzing systematically " structure vibration mode ", " vibration period ", " structure lateral rigidity ", " seismic action force ", " seismic response force ", " floor seismic shear force ", " lateral horizontal displacement of structure " and " members internal force ". results indicate : ( 1 ) based on equal area, the special - shaped columns replaced the rectangle columns, the structural lateral rigidity enlarges, the lateral displacement minishes obviously, the earthquake response increase slightly, the biggest increasing amount of frame columns axis - compress ratio is smaller than 0. 08. the whole aseismic performance of structure has improved ; ( 2 ) when the section ' s length and section ' s thickness ratio of special - shaped columns is smaller than 3. 6, the structure benefits to resist seismic action ; ( 3 ) the angle of horizontal seismic action with the whole coordinate is 0 degree, structure earthquake response is bigger, belonging to a control factor of structure aseismic design ; ( 4 ) the frame - truss structure with special - shaped columns and the " a " - brace has the biggest lateral rigidity ; ( 5 ) the frame - shear wall structure with special - shaped columns have bigger lateral rigidity and smaller displacement, members internal force enlarged just rightly, have much superiority of resisting seismic action ; ( 6 ) in the higher seismic fortification criterion region ( 8 degree of seismic fortification intensity ), aseismic disadvantageous building site ( iii type site ), adopting special - shaped columns structure system, should reduce possibly the building ' s self - weight in order to reduce the earthquake response ; ( 7 ) the response spectrum method of computing seismic response and the time - history analysis method have similar analysis result

    西安理工大學碩士學位論文在水平地震作用下，並考慮風荷載組合，分別對「矩形柱純框架結構」 、 「異型柱純框架結構」 、 「異型柱框一析架結構」及「異型柱框-剪結構」等四種結構體系，通過改變結構參數，運用空間有限元方法，進行地震作用計算。系統地分析研究「結構振型」 、 「振動周期」 、 「結構側向剛度」 、 「結構地震反應力」 、 「樓層地震剪力」 、 「結構側向位移」 、 「層間位移角」 ，以及「構件內力」 。結果表明:在等面積原則下，異型柱代換矩形柱后，結構剛度增大，側向位移明顯減小，地震反應力略有增加，框架柱軸壓比最大增幅小於8 % ，結構整體抗震性能有所提高;當異型柱肢長肢厚比小於等於3 . 6時，結構有利於抗震;水平地震作用力與整體坐標夾角為0度時，結構地震作用效應較大，屬結構設計的控制因素之一;異型柱框一析架結構採用「人」字斜撐，側向剛度大於「八」字斜撐和「人一八」字混合斜撐;異型柱框一剪結構側向剛度大、位移小，構件內力增大適中，是一種抗震性能優越的結構體系:在抗震設防烈度較高地區（ 8度）和抗震不利的建築場地（ m類場地） ，採用異型柱結構體系時，應盡可能減輕結構自重，降低地震作用力;分別採用「振型分解反應譜」法和「時程分析」法進行地震作用計算，兩種方法所得結果基本一致。
  15. By the data observed on - site, it indicate that the reinforcing plan which the plant to disembark and the dam to be connected has solved the problem that the plant to disembark occurs resonance vibration with the frequency of the turbogenerator units, but the problem of resonance vibration of the downriver structure of the plant has not been solved, hence the study of the reinforce structure of the downriver plant must be made

    廠房在此長期嚴重的振動下，立柱出現水平周邊裂縫，門窗墻壁也均產生裂縫，威脅到電站的安全運行。現場測試表明上游廠壩間在一定范圍內連接加固，雖然解決了廠房上游一階頻率與轉頻的共振問題，但對下游結構作用不明顯，因此需要對廠房下游結構的加固作進一步的研究。
  16. In section 5, e are in a position to consider some properties, mainly oscillation, cycle length and periodicity, etc, for a rational difference equation involving maximum function, partly solving an open problem. several natures for lyness equation are studied in section 6

    第六節中研究了tyness方程的一些性質；首先對于常系數的tyness方程，得到了其周期性的幾個充分條件，尤其是5一周期的充要條件；據此解決了一個關於差分方程周期性的公開問題；然後把這個方程推廣到一般情形，研究其振動性、環長與周期性等。
  17. Contracted with the calculations of dam in rigid foundation, the frequencies are lesson and periods of dam are lengthened because of elastic restraint of foundation. and under earthquake load, the maximum displacement of dam top is larger

    與剛性地基下壩體計算結果相比，由於地基的彈性約束作用，壩體的自振頻率降低，周期延長；且在地震荷載作用下，壩頂最大動位移增大。
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