logging tractor [林] 集材拖拉机
logging tractor operator 伐木拖拉机操作员
logging by tractor 拖拉机集材
Gear-box of Logging Tractor 集材拖拉机齿轮箱
The logging string was decoupled from the tractor section using a flex joint to enable consistent tool positioning and centralization in the well.
使用一个柔性接头将测井管串与爬行器段隔开，以实现连续工具串在井内的定位和居中。
The basic structure and the specification of downhole tractor are shown in this paper, also, the logging techniques are summarized.
文章介绍了水平井拖拉器的基本结构及性能指标；
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