downgoing plate 下沉板块
downgoing signal 下行信号
downgoing shear event 下行切变波
downgoing reflection 下行反射
downgoing slab 俯冲板块
downgoing intrabed multiple 下行层间多次波
high amplitude downgoing event 强振幅下行波
downgoing wave 下行波
downgoing waves 下行波
Direct downgoing wave in VSP data has strong energy and high signal-noise ratio, which favours the calculation of absorption para - meters.
VSP资料的直达下行波能量强，信噪比高，为求取吸收参数提供了有利条件。
The comparison between measured and calculated values generally shows the same trend and the downgoing resistance of plunger increases with flow rate in both cases.
结果表明，现场测试值与计算值总体趋势相同，柱塞的下行阻力都随流量的增加而增大，现场测试值与公式计算值基本相符。
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