This phase is sometimes implemented as an on-demand feature, embedded into collector's fabric (semispace collectors being an example), or in an incremental fashion.
这个阶段有时作为一个随需应变的特性来实现，被嵌入到收集器的结构(例如半空间收集器)中，或以一种增量的形式来实现。
A 1d finite element method in time domain is developed, which is used to calculate the in-plane wave motion of free field in elastic layered semispace by oblique seismic incidence.
提出了一种弹性水平成层半空间中平面内波动斜入射时自由波场时域计算的一维化有限元方法。
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