過度振動 的英文怎麼說

中文拼音 [guòdùzhèndòng]
過度振動 英文
overvibrate
  • 過 : 過Ⅰ動詞[口語] （超越） go beyond the limit; undue; excessiveⅡ名詞（姓氏） a surname
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 振 : 動詞1. （搖動; 揮動） shake; flap; wield 2. （奮起） brace up; rise with force and spirit
  • 過度 : excessive; over; undue; ana-; hyper-
  • 振動 : vibrate; vibration; vibrance; vibrancy; vibra; vibes; shaking; rumble; jitter; chatter; sway; jar...
  1. First, it is compressible and cushiony ; second, it can be transported to a long distance with a little power loss ; the last, its flux and velocity of flow are quite high, so the reaction time of the operators can been considerably shortened. aiming to solve the problems of vibrating machinery such as short life - span, poor cushion and high energy consumption, the writer, on the basis of characteristic of pneumatic mentioned, contrives a set of valve controlled pneumatic vibrator, which has larger output vibrating force and longer life - span with simple structure. then, it is applied to drive a vibrating screen and the result is fairly well

    文中針對氣動技術本身的特性及優點，如：可壓縮，具有緩沖性；能耗損失小，便於遠距離輸送；流量大、流速高，執行元件響應速度快等，以解決振動機械在應用過程中的緩沖、能耗以及使用壽命等問題為目的，設計出一套輸出激振力大、結構簡單、使用可靠的閥控氣動激振器，並將其成功地運用到振動篩上，取得了較好的效果。
  2. Because the lattice vibration is weak at very low temperature, the contributions of electrics and other low energy excitations become dominant parts of specific heat. therefore, we can study the micromechanism of many physical phenomena from specific heat measurement

    在很低的溫度下，由於晶格振動變得很弱，電子和低能激發貢獻越來越突出，這對我們通過低溫比熱研究很多現象的微觀機制十分有利。
  3. A new method for measuring the vibration of shadow mask without touch by detecting the light density with reflection type optical fiber sensor is presented. the measurement system based on the new method is designed to make the vibration measurement easier working, faster calculating, and get more precise results. it is an important measurement and analysis tool to improve the performance of shadow mask and display quality of cpt

    本文提出了基於單光纖光強度反射法的非接觸式微振動測量系統的原理，並設計製造了該測試系統，探索出了簡單方便可靠的測量方法，能夠準確客觀地反映蔭罩振動的各項參數（各振動模的振動頻率、振幅、衰減時間） ，實現了測試裝置的簡便化和測試過程的自動化，為cpt張緊式蔭罩系統的性能改進與顯示質量的提高提供了有效的測試分析手段。
  4. Based on extensive investigation of construction technique history of chinese ancient buildings, the structure method, structure developing history and seismic behavior of chinese ancient timber structure buildings are analyzed in several respects of the structural system and form. through a series of experiments on constituent parts of chinese ancient timber building structure, including the tests on the corbels and brackets called dougong subjected to low cyclic reversed loadings, the tests on the wooden frame using the tenon - mortise joints as connections of column and beam subjected to low cyclic reversed loadings, the tests on vibration isolation effect of friction and slippage between column footing and their socle base, and a series of shaking table tests on a chinese ancient timber structure palace building mode under artificial earthquake at serving conditions, destroyed conditions and reinforced conditions, many valuable results of structures such as moment - curvature hysteretic loops of dougong structure and tenon - mortise joints under low cyckc reversed loadings, the static function, the seismic performance, energy dissipation, vibration reduction, energy - loss mechanism, nechanicalmode and failure mode were studied. aplenty of valuable parameters of the structure system were obtained, such as the natural period of structure, vibration modes, damping ratio, factor of vibration isolation, oscillate amplitude of ineitial accebration, velocity and displacement, magnitude of slippage, and the mechanism of structure failure and collapse etc. based on these research, the complete analysis of ancient timber structure under earthquake were carried out in which including mechanism analysis method, calculating mode, strength analysis of members and joints, strengthening methods for serving damaged ancient timber structure buildings were also taken into account

    依照宋代《營造法式》建造了抬梁式殿堂木結構構件及結構模型，對中國古代木結構中的典型構造如：柱腳在礎石頂面平擱簡支、柱架榫卯連接、柱高不越間之廣、側腳、生起、斗拱等的構造機理及結構功能進行了量化分析和實驗研究： （一）通過木柱石礎靜摩擦試驗，測定了柱腳與石礎古鏡面間的摩擦系數及摩擦力隨上部結構荷載變化的規律； （二）通過單柱承載力試驗，測定了古建築中木柱的受力變形特徵、破壞模式、及模型材料的變形模量、極限承載力、極限變形等參量； （三）通過柱架低周反復荷載試驗，測定了柱架的抗側移剛度、柱架恢復力特性及滯回曲線、榫卯張角剛度及其變化規律、柱架及榫卯的極限承載力和極限變形、及榫卯減振參數； （四）通過斗?低周反復荷載試驗和受壓試驗，測定了古建築木構件與木構件間摩擦系數，斗?抗側移剛度，斗?恢復力特性及滯回曲線，斗?抗壓極限承載力及受力變形規律； （五）通過抬梁式殿堂間架模型振動臺試驗，測定了殿堂木構架結構自振周期，地震反應振形、阻尼特性及阻尼比；按結構分層特點對柱腳、柱頭和斗?層上的屋蓋的地震反應採用多點同步測量，對柱根滑移、榫卯變形、斗?的變形、復位、耗能減振參數等進行了定量分析。
  5. The number of modes should be selected according to the participant coefficient of mode when calculating the internal force by the response spectrum method ; ( 4 ) the roof plate of large base which connect the towers together should be thick enough but not exceeding the proper scope that the towers and the large base can vibrate together, ( 5 ) in structures with large base and muti - towers, with increasing of the capacity of the large base, the inter - story shear force will increase while the inter - story displacement will decrease as to fulfill the ductility request to avoid the large base becoming weak story, but meanwhile, the upper story will turn into weak story, thus the coefficient r s should be within 2. 0 ~ 3. 0

    採用振型分解反應譜法計算結構內力時應根據振型參與系數選擇振型避免漏選；大底盤多塔樓結構連接各塔樓的裙房屋面剛度應做得大些，以保證底部裙房與上部塔樓共同振動，但也不能過剛；大底盤多塔樓結構底盤承載力的加強將使底盤層剪力增大、層間變形減小，但易於滿足延性要求，在一定程度上可避免底盤成為薄弱層。但底部加強會導致薄弱層的上移，因此採取提高底盤承載力的措施的效果是有限度的，承載力系數s宜取為2 . 0 3 . 0之間。
  6. Strength and environment, a professional chinese publication in 1980, carried special introductions to this model shrinking method, which, after 1984, was included in the structure vibration and dynamic substructure analysis method, a textbook compiled by shanghai ' s fudan university

    這種模型減縮方法也早在1980年出版的中國專業刊物《強度與環境》上有過專門介紹， 1984年後被編進了復旦大學《結構振動與動態子結構分析方法》教科書中。
  7. The composition of sample was identified by means of x - ray diffractometer ( xrd ). magnetic properties were measured by vibrating sample magnetometer ( vsm ). the combustion behavior and crystallization process of the gel were studied by means of differential thermal analysis - thermogravimetric analysis ( dta - tg )

    利用x射線衍射儀（ xrd ）確定樣品物相，振動樣品磁強計（ vsm ）進行磁性測量，綜合熱分析儀研究凝膠的燃燒和析晶過程，掃描電子顯微鏡（ sem ）和透射電子顯微鏡（ tem ）觀察粉末的形貌與粒度。
  8. The reassigned smoothed pseudo wigner - ville distribution ( rspwvd ) is introduced, which has less interference and higher resolution than other time frequency distributions like wigner - ville, choi - williams etc. it is used to detect the multi - knocking of engine such as cylinder, piston pin, valve, crank bearing, connecting rod bearing and jib knocking. a new fault diagnosis technique based on the rspwvd for the engine multi - knocking problem is proposed. by comparing the bispectrum and bicoherence of the gear vibration signals, it is demonstrated that bispectrum has an advantage over bicoherence for feature extraction of such signals

    第四章首次引入一種重分配方法，得到干擾項少而解析度高的重分配平滑偽魏格納維爾分佈（ rspwvd ） ；對發動機曲軸主軸承響、連桿軸承響、活塞銷響、活塞敲缸響、氣門響和挺桿響等常見機械異響故障振動信號特徵進行了全面地比較分析；通過對各種異響故障特徵信號的分析研究，提出基於rspwvd的發動機多異響故障診斷策略，利用該策略可以準確識別不同的發動機異響故障。
  9. ( 3 ) by spot reconnaissances, according to the results of calculations and measures, the problem of vibration is solved by adding deflexed supporting and suspending nogs, making pipelines shunt - wound and without changing the previous design and collocation, which can also measure up nationally. to complete the improving program successfully, the improving project is demonstrated using ansys5. 6 limited - unit analyzing software, the results of it show that the project put forward can resolve the problem of transmitting steam pipelines

    通過現場勘察，根據計算和測量結果，決定在不改變導汽管原有設計和布置，同時又滿足國家標準的前提下，採用加裝偏轉支吊架、導汽管並聯的措施，通過改善導汽管剛度和改變管道固有特性的方法，對該機組四根導汽管振動問題進行了處理。
  10. However, one of the most serious impediments to wider use and improve precision of psi is its sensitivity to external vibration with the consequence that psi has rarely been used in a manufacturing in - situ and some special situations, such as that the optical path is very long or the detected unit is very large

    通過嚴格控制環境條件（溫度、氣流、振動等） ，其理論光程差（位相）的最小解析度可以達到nm的數量級。然而，由於干涉計量測試靈敏度高、精度高，對外界振動非常敏感，使它的應用范圍受到限制。
  11. In this paper, the author combines the theory analysis with the experiment research method, and discusses the seismic behaviours, 3d elaborate finite element analysis and simplified model analysis of a kind of multi - function tall building - " sub - shearwall supported by frame ", which is applied widely today. the main contents are as follows : in order to observe the failure process and the earthquake response of the complex structure, and to analysis the seismic behaviour of the structural system and structural members, a 1 / 20 cement mortor model of a complex tall - building which is about to be built was producted and the shaking table test of this model under 26 sorts of earthquake loads was made. using sap2000 finite element analysis program, a 3d analysis model was built in computer, and the elastic time - history analysis of the model was done

    本文採用理論分析和試驗研究相結合的方法，研究了目前應用較多的綜合性大廈? ?框支分區剪力墻高層商住樓的抗震性能及空間精細分析和簡化分析方法，主要內容為以下幾方面：對一擬建的復雜高層建築結構，採用1 20比例的空間整體模型，進行了26種工況下的模擬地震振動臺試驗，觀察了結構的破壞過程和地震反應，分析了結構及構件的抗震性能；建立了結構的精細空間模型，利用sap2000n大型有限元分析程序對結構進行了彈性時程分析；通過有限元分析與試驗結果的對比，對結構的抗震性能和抗震能力做出綜合評價，認為該結構由於轉換層上部去掉部分樓板，既可滿足建築設計的通風、採光等要求，又可達到協調結構轉換層上、下樓層抗側剛度的效果，是一種較理想的有多道抗震防線的結構型式。
  12. Fist ly, use mass equivalent method to predigest the original rotor system. secondly, use transfer matrix arithmetic to have finished the relative program to calculate the critical speed of flexible multi - tray rotor bearing system by matlab language. thirdly. finish program the unbalance response using riccati - transfer matrix arithmetic and finity buck arithmetic. fourthly, answer to the high vibration of uncontroled system when cross the critical speed, come out to adopt changing clearance damper bearing to control the viberation

    本文對多柔盤轉子-支承系統的振動現象做了以下初步探索：用質量離散化方法把原轉子系統簡化；採用matlab語言編制了對傳遞矩陣法計算多柔盤轉子-支承系統的臨界轉速；用matlab語言對riccati傳遞矩陣法和有限元法編制了程序計算系統的不平衡響應；並針對其過臨界轉速時振動較大的現象，提出採用變間隙控制油膜剛度和阻尼，從而使原系統的在特定轉速（臨界轉速）的一段范圍內不平衡響應減小；並從被動控制與主動控制兩方面進行數值模擬，取的了較好的控制效果。
  13. In this study, based on bispectrum and bicoherence extraction of vibration acceleration signals at spindle end of a vertical machining center while milling operation, change rules of bispectrum and bicoherence of the signals were analyzed for the progressive wearing process of the flank wear land of the milling cutters

    通過提取銑削加工過程中機床主軸端振動加速度信號的雙譜及其雙相干系數，分析了銑刀后刀面漸進磨損過程雙譜及其雙相干系數的變化規律。
  14. The result of the experiment shows that the proposed forced vibration method device has the quality of stability and repetitiveness of the data, the wide range of the testable reduced velocity, the exactness of coupled and direct flutter derivatives. and it does not need to employ any complicated identification system to check it further

    結果顯示：本文提出的強迫振動法裝置具有試驗數據穩定、數據重復性好、可測量的折減風速范圍寬、交叉項導數與對角項導數具有同等精度和不需要復雜的系統識別過程等一系列優點。
  15. The safe distance of dynamic compaction to the exiting structures was determined according to the measurements of vibrating speed, vibrating acceleration, foundation displacement and deformation of structures

    通過振動速度、振動加速度、地基位移、建築物的變形等項目的監測來確定強夯的安全距離。
  16. Statistics and analysis of amplitude domain parameters of the vibration acceleration signal measured during closing of the pump valve shows that, by using this diagnosis method, the feature information of the pump valve failure can be extracted effectively, and the failure information features are rather obvious

    通過對測取的三缸泵閥箱上泵閥關閉過程振動加速度信號的幅值域多參數的統計分析證明，採用振動信號幅值域多參數診斷法可有效提取泵閥失效故障的特徵信息，且故障信息特徵非常明顯。
  17. Aiming at the key component, through analyzing the time domain and frequency characteristic of acceleration vibration signals and force signals, this paper attempts to find the infection factors of grinding vibration and to optimize the grinding parameters, which is based on ultra - high speed surface grinding experimentation

    摘要以關鍵部件為研究對象，通過在超高速磨削實驗臺上進行磨削工藝試驗，對比不同參數下加速度振動信號和磨削力信號的時頻特徵，分析了磨削過程振動特性及其各種影響因素，提出磨削工藝參數優化方案。
  18. We get into several theoretical discussions in the part two, and point out that the huge population is the very encumbrance of the modernization course in the country. historical experience of china farming since 1950s is covered in the third section, which prove the theoretical hypothesis reached in the former chapter, the suggestion here is that decision maker have to pay the most attention to the excess baggage. part four focus on the strategic decisions of wuhan, the archtypes of agricultural modernization are created in this part, also a conclusion is draw that, instead of putting the three strategies together, agricultural integration is the most suitable choice for the rural area of wuhan

    在文章的第三部分，首先運用一般的歷史分析方法，對我國農業現代化的歷史進行了總結和歸納；在此基礎上，運用系統動力學的方法，建立了不同歷史時期農業發展問題的系統基模，並以此對農業現代化的動態復雜特性進行了深入的研究和探索；也進一步證實了我國農業現代化進程的最為本質的制約因素是農業勞動力轉移問題，同時還指出，歷史上的種種「失誤」 、 「不足」 ，正是由於缺乏或忽略了對農業現代化的這種動態復雜特性的深刻認識，並導致了我國農業現代化進程的過度振蕩與滯緩。
  19. No accommodation or recreational or catering facilities should be exposed to excessive vibration

    居住艙室或娛樂或膳食服務設施不應暴露于過度振動中。
  20. Field measurements are carried out to record the vibration data of a template offshore platform. dynamical characteristics and responses are analyzed to search the cause of the excessive vibration of the platform under mildly sea state

    進行了海洋平臺現場振動測試，並利用振動測試數據進行了平臺動力特性、動態響應分析，研究了海洋平臺過度振動的原因。
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