本实用新型涉及一种汽车防倒滑装置，其特征在于：在变速箱壁上设置有单向转动轮；
The utility model relates to slipping-back preventing device for automobile. The utility model is characterized in that the wall of the gear box is provided with a unilateral rotating wheel;
一个冬天的早晨，一名意大利雇员小心地解释他为什么上班迟到了五十分钟，“室外太滑了，以至于我每向前迈一步，就要向后倒滑两步。”
One winter morning, an employee from Italy cautiously explained why he had shown up for work fifty minutes late, "It was so slippery outdoors that for every step I took ahead, I slipped back two."
司钻要把滑大绳或倒大绳的作业情况记录在班报表上。
The driller is to record the slip and cut operation in the tour book.
在任何情况下，在预定滑大绳或倒大绳之前，都要先对大绳进行直观检查。
Under all circumstances, visual inspection of the drilling line must take precedence over the predetermined slip and cut procedure.
在任何情况下，在预定滑大绳或倒大绳之前，都要先对大绳进行直观检查。
Under all circumstances, visual inspection of the drilling line must take precedence over the predetermined slip and cut procedure.
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