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东煤公司科技中心于1988年12月15—16日在双鸭山选煤厂召开了TBS—1型末煤跳汰机人工床层筛板鉴定会。将过去的钻孔筛板改为不锈钢长方孔(21×28mm)筛板后,开孔率可增加到
East Coal Corporation Technology Center in December 15, 1988 December 16 Shuangyashan Coal Preparation Plant held a TBS-1 end of the jig artificial bed screening identification meeting. The past drilling sieve to a rectangular hole (21 × 28mm) sieve, the hole rate can be increased to