若提高测量仪表精度，则中心差分法估计方差相对值明显改善，可提高到10%以内。
If we heighten the precision of measuring equipment, the central difference's relative error of the estimation variance improved great, which is less than 10%.
本文采用三维有限元和中心差分法对一个具有一定取向的层板在冲击载荷下进行了动力分析。
The dynamic analysis of a layered fiber-reinforced composite laminate subject to a given impact loading has been made with a three dimensional finite element and central difference method.
本文应用一致性时域有限差分法（FDTD）和近场远场变换计算散射声目标的反射声压强度，找出反射声压级与目标声中心到换能器间距离的关系。
Using the finite difference time-domain (FDTD) method and near field to far field transformation, pressure of the reflected sound from the scattering target is calculated.
应用有限差分法对试井的数学模型进行求解，采用中心差分。
Applying the finite difference method to solve mathematics model of the well tests, and the central difference method is used.
在中心区域采用离散元分析，其周围区域采用有限差分法分析。
The DEM is used in the focus zone, and the finite difference method is used in the surrounding zone.
在中心区域采用离散元分析，其周围区域采用有限差分法分析。
The DEM is used in the focus zone, and the finite difference method is used in the surrounding zone.
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