propagation ratio 中文意思是什麼

propagation ratio 解釋
傳播比
  • propagation : 持續培養
  • ratio : n. （pl. ratios）1. 比，比率，比值；比例；系數。2. 【經濟學】復本位制中金銀的法定比價。vt. 1. 用比例方式表達；求出…的比值；使…成比例。2. 將（相片）按比例放大或縮小。
  1. Firstly, second harmonic component ratio and dead angles of two phase inrush ' s dispersion in three - phase transformes are acted as input variable. secondly, the method applies improved algorithm based on the original algorithm of multi - layer forward back propagation network, that is to say, adding last variational effect of weight value and bias value to this time and making use of variable learning rate. at the same time, this method also adopts dynamic form in the number of hidden floor node

    首先，文中將三相變壓器兩相涌流差流的二次諧波含量比和間斷角作為網路的輸入變量；其次，利用對原有bp網路訓練演算法基礎上的改進型演算法（即在計算本次權值和閾值的變化時增加上一次權值和閾值變化的影響以及採用變學習率，與此同時隱含層神經元個數採用動態形式） ，通過樣本訓練使網路結構模型達到最優。
  2. Using the beam propagation method ( bpm ) simulation, we confirm that wide controllability of the branching ratio and low excess loss can be realized by this structure

    用bpm方法模擬的結果表明，此結構實現了50 - 94的不對稱分支比，並且具有低的附加損耗的特點。
  3. In viewing of the characteristics of propagation of 3d converted wave, studies are performed on the processing methods of 3d converted waves, such as horizontal component rotation, calculation of 3d transition point, hyperbolic velocity analysis and nmo ( normal moveout ) correction of 3d converted wave, and non - hyperbolic velocity ratio analysis and nmo correction of 3d converted wave

    基於三維轉換波傳播特點，對三維轉換波資料處理方法進行了研究，包括水平分量旋轉，三維轉換點計算、三維轉換波雙曲速度分析與動校正、三維轉換波非雙曲速度比分析與動校正等。
  4. In this paper, using high - speed train aerodynamics model research system, the propagation mechanism of compression wave, which created when high - speed train entering into a tunnel was researched, at the same time the effect of velocity of the model train and the ratio of train with tunnel was analyzed, the result is helpful for future research

    利用高速列車空氣動力學模型實驗系統對高速列車在進入隧道過程中瞬變壓力的傳播規律進行研究，並分析了列車速度以及阻塞比對測試結果的影響，得出的結論對以後的研究具有一定的參考和借鑒。
  5. Neural network method is applied to the strength prediction. the ratio of water to cement material, the mass of fly ash and the silicon fume are regarded as network inputs and th e 28d strength is the target. the inputs and target are used to train a three layers back - propagation network

    在神經網路應用中，以水膠比、膠凝材料用量和粉煤灰摻量作為輸入，以28d抗壓強度作為目標輸出，對一個三層bp網路進行了訓練，然後利用訓練后的網路對已知配比和28d抗壓強度的混凝土進行了強度預測。
  6. Studies on the fatigue crack propagation rate ( fcpr ) indicate that load ratio ( r ) has a great effect on the fcpr : the greater load ratio is, the higher the fcpr becomes, and the lower kth shows. compared with load ratio, the thickness of the specimen has a lower effect on the fcpr

    對鎂合金的疲勞裂紋擴展特性的研究表明：載荷比r對鎂合金az91 ， am50裂紋擴展行為具有很大的影響。 r值越大，裂紋擴展速率越高，疲勞門檻值k _ （ th ）越小；試樣厚度t對鎂合金az91 、 am50穩態裂紋擴展速率的影響沒有r值那麼明顯。
  7. In the paper, by using bp ( back propagation ) method of ann, we can get the relationship between grading, asphalt - aggregate ratio, bulk density, percentage of voids, test temperature and ds. at the same time, we can get the relationship between grading, asphalt - aggregate ratio, bulk density, percentage of voids, test temperature and viscoelastic parameter. at last, we can estimate the ds and draw the deformation curve

    本文應用bp人工神經元網路，建立瀝青混合料的礦料通過百分率、瀝青用量、毛體積密度、空隙率、試驗溫度與瀝青混合料粘彈性參數的關系，或建立瀝青混合料的礦料通過百分率、瀝青用量、毛體積密度、空隙率、試驗溫度與車轍試驗動穩定度值的關系，從而預估車轍試驗的動穩定度值和繪制車轍試驗變形曲線。
  8. By analyzing the influence of hemisphere pits with different dimension and ellipsoid pits with different aspect ratio on stress and strain distribution of lap joint, the possible propagation of fatigue crack was discussed, and the effects of localized pitting corrosion on the structural integrity of lap joints were discussed

    通過分析不同尺寸的半球形蝕坑和不同長短半軸比值的半橢球形蝕孔應力應變分佈的影響，探討搭接件疲勞裂紋的可能擴展方向，討論局部孔蝕對搭接件結構完整性的影響。
  9. The simulation using the bi - directional beam propagation method proves that the demultiplexer can have very low insertion loss and high isolation ratio

    藉由雙向光束傳播法來模擬此組件，結果顯示此解多任務器具有很低的插入損耗和高的隔離度。
  10. It gives some solutions for designing the encoder. various log - likelihood - ratio - based belief - propagation decoding algorithms and their reduced - complexity derivatives for ldpc codes used in dvb - s2 are presented, in order to avoid the “ tanh ” function in the check - node updates

    接著，本文介紹了dvb - s2標準中ldpc碼的特點及編碼方法，給出了通過模擬得到的非規則校驗矩陣，針對編碼器設計中遇到的一些問題提出了改進方法。
  11. When the resource was rich in habitation, the ability of clonal propagation was significantly increased. and ratio of development root reached to 100 %. thus, certain ramets were reproduced

    當資源豐富時，克隆繁殖能力明顯增強，當年成根率達100 ，也能形成一定量的分株。
  12. Base on the basic principle of continuum mechanics, 2 - d contact type model are derived using circular plate element. mohr - coulomb type failure criteria and failure coefficients related with stress ratio are used in this model to simulate the failure process. the wave propagation in an orthotropic plane under impact loadings was numerically simulated, by using this algorithm

    從連續介質力學的基本原理出發，推導基於圓盤單元的正交各向異性二維連結型離散元計算模型，在模型中採用了mohr - coulomb型破壞準則和與應變率有關的材料破壞系數用以模擬材料的動態損傷和破壞過程。
  13. The principle of the ultrasonic method applied to measure elastic coefficient is by measuring the velocity of ultrasonic wave propagation in the solid material to obtain the elastic module, shear modulus and poisson ratio

    摘要彈性系數的超聲檢測，即藉助固體彈性常數與超聲波波速間的固有關系，通過測量縱波及橫波在固體中的傳播速度來獲取材料的彈性模量、剪切模量及泊松比。
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