1)  two dimensional discrete systems
二维离散系统
2)  BIBO stability/two-dimensional discrete systems
有界输入输出稳定性/二维离散系统
3)  two-dimensional
二维
1.
Analysis of the effect on two-dimensional transport-burnup calculation of dual-cooled waste transmutation blanket for FDS-I;
聚变驱动次临界堆输运燃耗计算二维效应分析研究
2.
Two-dimensional laser diameter detector;
JCJ-IIT二维激光测径仪
3.
Discussion of two-dimensional projective correspondence and perspective correspondence;
二维射影对应与透视对应的探讨
4)  two-dimension
二维
1.
Fabrication of ordered two-dimensional metal nanoparticle arrays;
二维金纳米微粒有序阵列的制备
2.
The Practice of Two-dimension Rights Control in the Road Transportation Management System;
二维权限设置在道路运输管理系统中的实现
3.
The study and the application of two-dimension water flow and sediment mathematical model in the river;
天然河道水沙平面二维数学模型研究
5)  2d
二维
1.
2D unstructured dynamic mesh research on store separation;
外挂物投放问题的二维非结构动态网格技术研究
6)  Two dimensional
二维
1.
High accuracy algorithm of numerical solutions of two dimensional hammerstein equations;
二维Hammerstein方程数值解的高精度算法
2.
The study on large scale two dimensional Bin Packing Problem and its tabu search algorithm;
大型二维装箱问题及其禁忌算法研究
3.
Comparing of results of two dimensional, quasi three dimensional and three dimensional models for groundwater;
地下水流二维、准三维及三维模型模拟结果比较
参考词条
补充资料:离散时间周期序列的离散傅里叶级数表示
       (1)
  式中χ((n))N为一离散时间周期序列,其周期为N点,即
  式中r为任意整数。X((k))N为频域周期序列,其周期亦为N点,即X(k)=X(k+lN),式中l为任意整数。
  
  从式(1)可导出已知X((k))N求χ((n))N的关系
   (2)
  式(1)和式(2)称为离散傅里叶级数对。
  
  当离散时间周期序列整体向左移位m时,移位后的序列为χ((n+m))N,如果χ((n))N的离散傅里叶级数(DFS)表示为,则χ((n+m))N的DFS表示为
  

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