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为了改善XB－300型钻机的不良性能,以充分挖掘现有设备的潜力,使其更好地为社会主义建设服务。第五地质队在局的帮助下,自去年下半年起,在大搞钻探和坑探机械化
In order to improve the poor performance of the XB-300 drilling rig, in order to fully tap the potential of existing equipment to better serve the socialist construction. With the help of the bureau, the 5th Geological Team has been engaged in drilling and exploration mechanization since the second half of last year.