Based on alternating - direction - implicit method , ADI - FDTD is an unconditionally stable FDTD method.

基于交变方向隐式的时域有限差分法(ADI -FDTD )是一种无条件稳定的FDTD算法.

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Based on Gurtin variational principle , a kind of unconditionally stable step - by - step integration method is presented.

对比例阻尼系统给出了基于精细逐步积分法的动态载荷识别方法.

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