... pressured shale受压页岩 pressured conveyer压带式输送机 Pressured gauge压力表 ...
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Negative coefficients occur where there is a downward decrease in velocity and density: for example, at the top of an over pressured shale diapir.
只有当速度和密度向下减少时，例如在超压页岩穿刺体的顶部，反射系数才会出现负值。
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