stationary structure 中文意思是什麼

stationary structure 解釋
固定式結構
  • stationary : adj. 不動的，靜止的，不變的；不增不減的，固定的，裝定的。n. 1. 不動的人，固定物。2. 〈pl. 〉駐軍。n. -ariness
  • structure : n. 1. 構造，結構；組織；石理，石紋。2. 建造物。3. 【化學】化學結構。4. 【心理學】（直接經驗中顯現的）結構性，整體性；整體結構。adj. -d ,-less adj.
  1. The stationary slewing crane has such characteristics as simple structure, convenient operation, high efficient, etc. it is widely used for the feeding and laying off of the workpiece of production line, assembly line and lathe in the workshops, and the material swinging operation in such places as the warehouse, quay, etc

    定柱式旋臂起重機定柱式旋臂起重機，具有結構簡單操作方便節能高效等特點，廣泛用於工礦車間的生產線，裝配線和機床的上下工件，以及倉庫碼頭等場所的物料吊運作業。
  2. Based on the mathematical model for analyzing the seismic responses of submerged tunnels proposed by choshiro tamura and shunzo okamoto, the analytical model for calculating the stochastic earthquake responses of the whole underground structure was proposed and the formulas for evaluating the stochastic characteristics of the underground structural seismic responses were derived. the dynamical mean - square responses of the nanjing changjiang tunnel under gauss stationary random process were calculated. 3

    2將日本田村重四郎?岡本舜三提出的沉埋隧道地震反應分析的數學模型應用於地下結構隨機地震反應分析，利用數值分析方法建立了隧道整體隨機地震反應分析的數學模型，得到了地下結構整體隨機地震動力響應數字特徵的數學表達式，為地下結構整體隨機地震反應分析及動力可靠度的研究提供了一種分析途徑。
  3. The main purpose of this dissertation is to establish the deterministic and the stochastic model of minimum weight of the structure, and the optimization is based on the structural dynamic response reliability. the dynamic response of the structure under stationary or non - stationary excitations is investigated, then the dynamic reliability is calculated and the design variables of the structures are optimized

    本文重點建立了基於動力響應可靠性的結構優化設計最小重量的確定性和隨機性模型，研究了結構系統在平穩或非平穩隨機激勵作用下的隨機動力響應，並在此基礎上進行了結構動力可靠性計算和優化設計。
  4. In the second, in allusion to non - stationary the characteristic of the signal, the author introduces to the method that using empirical mode decomposition to analysis the vibration signal so that the signal are made up of some intrinsic mode function, after this process, we can use stochastic subspace identification to identification the mode parameter of the structure and find the same work frequency

    其次，針對氣閥振動信號的非平穩特點，本文採用了經驗模式分解法（ empiricalmodedecomposition ）對振動信號進行分析處理，使之成為若干個基本模式函數imf （ intrinsicmodefunction ）和一個殘余量的線性組合。接著採用隨機子空間參數識別法對各個基本模式函數其進行結構參數識別，同時找出各種狀態的共同工作頻帶。
  5. ( 3 ) when f is about fr, the secondary flow reaches its weakest intensity, but has a most complicated structure. for co - rotation and counter - rotation in which the centrifugal force dominates the flow, the secondary flow in a rotating helical pipe has the same direction with that in a stationary one. for counter - rotation in which the coriolis force dominates the flow, the secondary flow has the opposite directions to that in a stationary one

    （ 3 ） f在fr左右（離心力和科氏力相當的負旋轉） ，二次流強度最弱，但結構最復雜；對于正旋轉和離心力占優的負旋轉，二次流速度的方向和靜止的情況相同；對于科氏力占優的負旋轉，二次流速度的方向和靜止的情況相反。
  6. Epstein ' s microengine only has two parts : a moveable rotor and a stationary structure that together function as the compressor and combustor

    愛匹斯丁的微型引擎只有兩個部分：一個可轉動的的轉子和一個固定的腔室，它們共同成為壓縮機和燃燒機。
  7. This stationary belt conveyor, bue to its advanced structure, easy maintenance, low cost and general - purpose application, is widely used tocontinuously convey various bulk - cargo and piece goods in many industries, such as energy, traffic, building materials, chemicals, coal, metallurgy, etc

    固定式皮帶輸送機由於輸送量大，結構先進，維護方便，成本低，通用性強，而廣泛應用於能源、交通、建材、化工、輕工、煤炭、冶金等各個行業，連續輸送各種散料和成件物品。
  8. However, in fact, thephysical parameters and dynamical character of the structure duringthe occurrence ofdamage are time - varying, and the response signalbehaves a non - stationary character. thus, it is generally recognized that the linear time - varying ( ltv ) model is moreappropriate and better than linear time - invariant ( lti ) model to capture theinstantaneous dynamical behaviors

    然而事實上，結構的損傷使得其物理參數和動態特性隨著時間而變化，結構的響應具有非穩態的特徵。因此，利用線性時變系統模型，獲取系統的時變特徵，才更有利於結構破損診斷，線性時變系統的參數識別也受到了越來越多的關注。
  9. There is a strechable u - shapped structure in the center of the axle supporting the body when the cart in stationary

    在圓軸中部有一可拉伸的u形支架，當車子靜止時，起支撐作用。
  10. We research the stability of the three - factor model by using chow test and research the coefficient stationary by using unit root test, and forecast the coefficient of the model using arma 、 garch model. the results show that the model is instability in the long run, most coefficient is non - stationary, and we can preferably forecast the coefficient by using the arma 、 garch model. in the process of designing strategic investment portfolios and the strategic risk budgeting prevailing in resently which in order to control investment risk, the investors generally structure their portfolios in different industries

    模型回歸系數是測度投資對象系統風險的重要指標，我們利用chow檢驗對證券收益三因素模型結構的穩定性進行了分析研究，用adf檢驗對模型的三個回歸系數的穩定性進行了實證分析，採用arma和garch模型對回歸系數的預測能力進行了研究，結果表明組合三因素模型結構不穩定，但短期比長期結構穩定性要高;大部分組合回歸系數時序穩定性較差，同時arma和garch模型對每個回歸系數時間序列進行預測顯示有較好的預測能力。
  11. The stochastic structure and stochastic intelligent truss structure are taken as research object in this paper. the analytical model and method of the structural dynamic characteristic are investigated. when the applied forces are random excitation or random process ( stationary random process or non - stationary random process ) excitation, the structural dynamic response, the active vibration control for the intelligent structure, the optimal placement of the sensor and the actuator and the optimization of the feedback gains of the closed loop control system for the intelligent structure, and the effects of the structural parameters on the active vibration control et al are all studied systemically

    本文以隨機結構和隨機智能桁架結構為對象，對結構動力特性分析模型與求解方法進行了研究；對結構在隨機力或隨機過程（平穩隨機過程或非平穩隨機過程）激勵下，結構的動力響應、結構的振動主動控制、智能結構中作動和傳感元件配置位置與閉環控制系統增益優化、結構參數對振動主動控制效果的影響等問題開展了全面而系統的研究。
  12. The explict structure of solution of a class of symmetric variational equation by stationary topy

    一類平穩型對稱變分方程解的顯式結構
  13. Because reciprocating pump has complicated structure and more exciters, so its signal is a strong non - stationary signal, and carrying out fault feature extraction and diagnosis is very difficult to it, this text mainly researches on featute extraction of reciprocating pump ’ s valve vibration signal. this text introduces hht that huang put forward, it is a kind of signal processing method that suits for dealing with the stationary signal, and suits for non - stationary signal also. although the hilbert - huang transform ( hht ) is an effective tool processing the non - stationary signal, the hht based on emperical mode decomposition ( abbreviated as emd ) algorithm which adopts the cubic spline interpolation could n ' t acquire accurate characteristics for the strong non - stationary signals in that the spline produces an accurate result only under the condition that the data consists of values of a smooth function

    本文引入了huang等人提出的hht ， hht是一種既適合於處理平穩信號也是一種適合於處理非平穩信號的信號處理方法。盡管希爾伯特-黃變換（ hht ）是處理非平穩信號的有效工具，但基於經驗模態分解（簡稱emd ）的hht由於採用三次樣條插值而不能準確提取強非平穩信號的特徵，因為三次樣條插值只有在數據由光滑函數值構成的情況下才能產生精確的結果。為了解決這個問題，本文提出了基於改進的emd演算法，即採用分段三次hermite插值多項式（ pchip ）作為極值包絡的方法。
  14. When the rotation has the same direction with the axial velocity, the effect of rotation enforces the intensity of secondary flow and the heat convection, the friction factor and the nusselt number increases as f increase ; when the rotation has the opposite direction with the axial velocity, the flow structure becomes more complicated, for f = 1. 2, the complicated structure of secondary flow generates, the friction facior and nusselt number almost has the same value of stationary straight pipe

    當旋轉方向和主流方向相同時，旋轉的作用加強了二次流的強度，使得管道摩擦系數變大，管道換熱效果增強；當旋轉方向和主流方向相反時，管道內流動結構變化十分明顯， f - 1 . 2時，流動結構最為復雜，摩擦系數降至最低，換熱效果最弱。
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