back reaming
基本解释
- [能源科学技术]倒划眼
英汉例句
- Drill pipe is attached to the far side of the reamer so that it can be pulled back from the near side, once the pre-reaming operation is complete.
扩孔器远侧与钻杆相连，当预扩孔作业完成后，可以将扩孔器从近侧拖回到远侧。
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双语例句
词组短语
- reaming and back reaming 划眼和倒划眼
短语
专业释义
- 倒划眼