deep hole and bench blasting
deep hole and bench blasting
深孔和台阶爆破
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Three dimensional finite element computing model is established and the effect of stemming length to deep hole bench blasting is studied by three dimensional finite element method.
采用三维有限元数值分析法，通过建立三维有限元计算模型，分析堵塞长度对堵塞区有效应力场的影响。
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