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		梯形应力脉冲在弹性杆中的传播过程和几何弥散1)
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			THE PROPAGATION PROCESS AND THE GEOMETRIC DISPERSION OF A TRAPEZOIDAL STRESS PULSE IN AN ELASTIC ROD 1)
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| 图3. 反 Laplace 变换的 Bromwich 积分路径及被积函数奇点分布 | 
| Fig.3. The Bromwich integral contour for the inverse Laplace transform and the singularity distributions of the integrand | 
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