经过生产实践，获得了良好的分选指标。
The production practice has achieved good separation indexes.
经过生产实践，获得了良好的分选指标。
The excellent separating index has been acquired in practical production.
经过生产实践，在大型电炉操作运行方面取得了较为成熟的经验。
Through production practice, the maturer experience in operation of large electric furnace is achieved.
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