The recovery of magnetic medium separated from product is an effective way to improve economic profit of dense medium coal separation technology.
重介质选煤工艺，对产品中脱除的磁性介质进行回收、再生，是提高这一工艺经济实用性的有效方法。
Today, the economy increases substantially and competition is getting severe. Airlines are working hard to reduce their operation costs in order to improve economic profit.
在经济突飞猛进，竞争日渐激烈的今天，航空公司为了提高经济效益，都在努力降低运营成本。
Materials management is the third profit source of enterprise, strengthening material management is the important way for enterprise to save on expense and energy and improve economic benefits.
物资管理是企业第三利润源，加强物资管理是企业节支降耗，提高经济效益的重要途径。
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