density-wave type pulsations 密度波型脉动
The results of the calculation indicate that the law governing the impact of various parameters on the density-wave type pulsation limit values is in agreement with that of the experimental values.
结果表明：各个参数对密度波型脉动界限值的影响规律与实验值是一致的。
The transform density logging instrument of type SFB98D is used to measure the quality of solidity well with full wave series.
SFB98D变密度测井仪是通过测量全波列来衡量套管井固井质量的一种仪器。
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