In the course of driving, the shank of the auger was damaged.A crawler crane was then employed to extract the two embedded tools.

 
  • 在螺絲形鉆被鉆入地下時(shí),它的柄受到損毀,地盤(pán)遂利用一部履帶式起重機將該兩件工具抽取。
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