The results obtained indicate that the center frequency of cased wave is obviously higher than that of formation wave in fast formation.
分析研究表明，快速地层水泥完全胶结时的地层波与套管波的主频差别较大，套管波主频明显偏高。
The researchers used fast neutrons to irradiate mouse embryos between the blastocyst stage and the beginning of somite formation.
研究人员用快中子照射在胚泡期和体节形成开始之间的小鼠胚胎。
The fluid cleanup rate has been increased by utilizing fluid fast clean up technology. Formation damage was depressed, and thus the effect of fracturing treatment has was improved.
研制的压裂液快速返排技术，提高了压裂液的返排率，进一步减少了压裂液对地层的伤害，提高了压裂效果。
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