stud driller
... stud cutter assembly 切削齿总成 stud driller 大班司钻 stud driver 双头螺栓扳手 ...
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我们不仅组织大班进行实操，同时也重视各岗位员工的实际操作训练，尤其对司钻、副司钻、井架工和吊机等岗位。
We not only organized captains to proceed operation, but also looked upon the operation training to the post personnel, especially the driller, assistant driller, derrickman and crane driver.
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