reverse gear device 中文意思是什麼
reverse gear device
解釋
倒檔齒輪裝置-
The rotary transmission case can achieve forward, reverse gear, which is fit for catching & revolving operation of different kinds of drill pipe ; reactive torque release device ensure drill pipes deformation releasing safety in the well drilling process
轉盤傳動箱可實現正、倒檔,適用各種鉆桿扣旋轉作業,反扭矩釋放裝置保證鉆井過程中鉆桿變形能安全釋放。
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