The change of stress field during the impact process was studied by transient analysis.
模拟采用瞬态分析方法，跟踪了在整个冲击过程中应力场的变化。
Fundamental action of process analysis is very important on development project environmental impact assessment.
工程分析是建设项目环境影响评价的关键所在。
Fundamental action of process analysis is very important on development project environmental impact assessment.
工程分析是建设项目环境影响评价的关键所在。
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