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1)  discrete spectrum interference (DSI)
离散谱干扰
1.
The corresponding WPD entropy values increase sharply when discrete spectrum interference (DSI), frequency spectrum of which is centered by several frequency points, exists in some frequency region.
将信号的小波包变换看做通过等带宽的滤波器组 ,输出是对应频带上的分量 ,如某一频带上存在离散谱干扰 ,其小波包变换树节点的信息熵将会明显增大。
2)  spectral interferences
质谱干扰
1.
The influence of spectral interferences on trace analysis of steels & alloys by inductively coupled plasma mass spectrometry;
电感耦合等离子体质谱干扰对钢铁及合金痕量分析的影响
2.
The conditions of microwave digestion,the matrix effect and spectral interferences were investigated,and the operating parameters of the ICP ionization source,mass spectrometry and microwave digestion were optimized.
试验考察了微波消解条件、基体效应、质谱干扰,并对ICP离子源以及质谱仪的检测条件和微波消解参数进行了优化。
3.
Most of the spectral interferences could be avoided by measuring in the high resolution mode(HRM).
样品用HNO3+HC l经微波消解后,试液直接进样用HR-ICP-MS法同时测定上述元素,在高分辨质谱测量模式下避免了大量的质谱干扰,详细地研究了HC l和高纯镓所产生的基体效应,以Sc、Rh、Tl作为内标元素校正了基体效应,讨论和确定了实验的最佳测定条件。
3)  spectral interference
光谱干扰
1.
Determination of Trace Rare Earth Impurities in High Purity Metallic Praseodymium by Inductively Coupled Plasma Atomic Emission Spectrometry and Correction of Spectral Interferences;
高纯金属镨中痕量稀土杂质的电感耦合等离子体原子发射光谱分析及光谱干扰的校正
2.
A new method had been developed to eleminate the spectral interference with spectral interference coefficients and non-spectral interference with concentration interference factors of Tb matrix.
应用ICP-AES摄谱法考察了稀土铽对其它共存稀土杂质元素的干扰效应,并采用光谱干扰系数校正法和浓度干扰因子联合校正技术有效地校正了铽基体效应。
3.
Spectral interference of matrix elements are also analyzed.
论述了ICP—AES法及测定污泥中重金属Zn、Cu、Mn、Ni、Co、Pb六种元素的分析方法,分析了基体元素的光谱干扰。
4)  Spectral interference
谱线干扰
5)  Interference spectra
干扰谱图
6)  spectrum disturbance
频谱干扰
1.
Analysis and measurement of spectrum disturbance carrier communication over MV overhead distribution line;
中压配电线载波通信的频谱干扰测试与研究
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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