In order to in-phase stack of aligned reflection events on CMP gathers, the stack velocities may have some higher or lower anomalies.
若使共中心点道集内的反射同相轴校平后能够同相叠加， 叠加速度则会出现一些低或高的异常。
The phase problem is one of the important factors that effect seismic reflective signal stack in same phase.
在地震勘探资料处理中，相位问题是影响有效地震反射信号实现同相叠加的重要因素之一。
It has been verified in this paper, by theoretical analysis with two-phase fluid mechanics and hydraulic tests, that decreasing surface roughness in a wade stack can not increase critical discharge.
本文通过两相流理论分析和水力学试验验证证实：室内排水立管管壁粗糙度的减小，不仅不能加大其临界流量，反而会减小其临界流量。
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