她尝试钻回自己睡觉时扯下来的草堆里头。
She tried to burrow back beneath the pile of grass she had torn up when she went to sleep.
对国外钻屑回注技术研究与应用情况进行了总结。
The foreign research and application situation of Cuttings re-injection technology is summarized in this paper.
在水平定向钻穿越管道回拖环节中，容易出现卡管现象，导致穿越失败，造成巨大的经济损失。
Pipe sticking phenomenon appears sometimes during pull-back stage of pipeline crossing with horizontally directional drilling, which results in crossing failure and great economic loss.
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