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我队根据矿区的特点，在300米以内的浅孔中，试验推广绳索取心钻进，取得了较好的钻进效果，钻探质量也有提高（见表1、2）。
According to the characteristics of the mining area, our team tried to drill in the shallow holes within 300 meters to get a better drilling result and improve the drilling quality (see Table 1 and Table 2).