冲击气流强度在断面不变的直巷道中传播会发生衰减，前期超压衰减较为缓慢，后期超压衰减增快。
The intensity of gas flow and shock wave will attenuate at straight roadway, which decays more slowly earlierly, and attenuates faster in the late.
冲击气流强度在断面不变的直巷道中传播会发生衰减，前期超压衰减较为缓慢，后期超压衰减增快。
The intensity of gas flow and shock wave will attenuate at straight roadway, which decays more slowly earlierly, and attenuates faster in the late.
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