dda 中文意思是什麼

dda 解釋
裁軍事務部
  1. Recommended dda hardware for bip 3040

    Bip3040用推薦的dda硬體
  2. Seismic stability analysis of rolled compacted concrete dam based on approach of dda coupled with fem

    耦合方法的碾壓混凝土壩抗震安全性分析
  3. The off - line program system based on cad / cam for dispensing robot is designed on the computer. in the module of trajectory planning, preliminary discussion is done about the shortest loop path and an algorithm of solving this problem is provided ; in the module of back procedure, dda ( digital differential analyzer ) is adopted in line, circle and ellipse interpolation. at last the protocol transferring program data to robot from off - line system is analyzed

    在離線編程的系統的設計中，實現了cad的建模、點膠軌跡的程序示教、工藝參數編輯、軌跡規劃、後置處理等功能，並在規劃模塊中針對平面內不規則排列點進行點膠的軌跡規劃進行了初步探討，採用圖論的方法，給出滿足實際要求且演算法復雜度較小的最短閉合迴路的程序演算法;在離線編程系統的後置處理模塊中，介紹了直線、圓弧、橢圓弧的dda插補方法以及脈沖分配不均勻的改進方法;最後對通信協議的制定進行了分析。
  4. Dda method of thermal stress problem for jointed rock mass

    節理巖體熱應力問題的非連續變形分析方法
  5. Aplication of gtm was first begined on shitai expressway, xuanitable dda expressway and jinghu expressway. gtm mix has higher resistant on rutting, lower temperature crack and water susceptibility. and asphalt can be ecnomized 10 % - 15 %. it can produce good ecnormic benefit to us

    Gtm通過在河北省石太高速公路、宣大高速公路和京滬高速公路實驗段的應用， gtm設計的瀝青混凝土對重載車輛具有較好的高溫抗車轍、泛油等使用功能，且可以減少10 - 15的瀝青用量，產生較好的經濟效益。
  6. Here, three methods are presented : shortening compensation, extending compensation and insertion compensation. this thesis also puts forward an improved dda arc interpolation algorithm, which decreases the radial deviation of the traditional algorithm without losing the original advantages

    改進的dda圓弧插補演算法繼承了傳統dda圓弧插補演算法不含超越函數的優點，減少了傳統dda圓弧插補演算法的徑向誤差，實現了內外均差弦線插補。
  7. Separate dda form is required for each loan account

    每個學生貸款帳戶必須各自填寫一張直接付款授權書表格。
  8. This paper gave a general method to solve the accelerate damage boundary ( adb ) of the packaging system by finding the adb of two representative packaging systems under type wave. as for the displacement damage boundary ( ddb ) of the packaging system, this paper fist defined the dda of the bilinear packaging system under half - sine wave and other kind packaging systems by analysis. moreover, the course of solve this kind of problem by analysis was given

    論文研究了兩種典型脈沖激勵下的非線性包裝系統的加速度損壞邊界及其影響因素，總結了求解加速度損壞邊界問題的一般思路；針對包裝系統的位移損壞邊界，文中首次運用解析法確定了半正弦波激勵下雙線性包裝系統的位移損壞邊界，歸納了用解析法解決此類問題的一般過程，同時，本文還對此給出了應用更為廣泛的一種數值方法。
  9. In the meanwhile, rma, wpfa and dda are potentially ideal choices for fine - resolution sar imaging of large scene in challenging environments that include imaging at a close range, using low centre frequency, and imaging very large scenes

    Rma 、 wpfa和dda演算法本身具有完全補償mtrc的能力，因此它們沒有成像區大小的限制，但是它們的計算量要大於pfa 。
  10. An analysis of destabilizing pattern and mechanism of rock - anchored crane beam by dda

    用非連續變形法分析巖錨吊車梁失穩形式及機理
  11. This paper, for the first time, adopts the discontinuous deformation analysis ( dda ) to model respectively the structural patterns, forms, displacement and key stratum ( dynamic modeling ) for arches with three - grips and grip beams in excavated rockmass, and some significant conclusions are drawn out

    首次採用非連續變形分析（ dda ）法，對采動巖體結構中的「三咬拱」結構模式、形態、位移與關鍵層等進行動態模擬，得出一些有意義的結論。
  12. Traditional finite element method ' s mesh can be used as the mathematic mesh for the nmm. and nmm is a promising numerical method to solve both the continuous and discontinuous deformation problem of rock mass and to unify the finite element method ( fem ), discontinuous deformation analysis ( dda ) and analytic method

    流形元法的最大優點可以統一處理連續變形與非連續變形問題，同時可以統一解決有限元法、非連續變形分析及解析法的計算問題，具有廣泛的應用前景。
  13. The application of dda method to the dynamic stability analysis of the rock slope

    非連續變形分析方法在巖質邊坡的塊體動態穩定分析中的應用
  14. According to the 2 - d analysis, the 3 - d analysis on the stress, strain and load of dda was made, and the corresponding formulation was also deduced secondly, according to the imperfection of current dda model, some improvements such as modeling the elastic - plastic in dda blocks, applying the augmented lagrangian method to dda method and disposing of the continuous problem in dda method were made. corresponding to the theories of improvement, the program of dda was also developed correspondingly

    然後通過學習和研究，本文嘗試著從（ 1 ） dda塊體彈塑性模擬（ 2 ）增廣拉格朗日乘子法在dda方法中的運用（ 3 ） dda方法中連續問題的處理等幾個方面入手，對現有的模型進行一些改進，並在此基礎上，對已有的dda程序進行了補充和完善。
  15. Before being destroyed absolutely, the components of the structure are discussed with some properties such as stress, strain, cracks created and locations of the plastic gemels. based on the achievements all over the world, all kinds of numerical simulation methods are compared and a conclusion is drew which indicates that fem is more consummate than dem and dda. provided that the model and parameters are rationally selected, we can simulate the blasting process precisely as possible

    在對國內外一些學者的工作進行總結和改進的基礎上，對當前的數值模擬方法分析比較后得出，離散元及dda等數值方法存在理論方面不成熟和應用范圍不廣等缺陷，而有限元理論發展至今，已經漸臻完善，只要建立適當的模型，參數設置合理，能比較精確地模擬框架結構爆破拆除。
  16. Dda, will you take me to the capital museum

    爸，你帶我去首都博物館吧？
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