问题描述：
profit margin 如何计算?
Apart from the decline of the domestic and international markets,the rise of energy and raw materials prices increased the cost of manufacturing and further narrowed the profit margin.
该句中的profit margin 是不是经常在公司财报中出现,是如何计算出来的呢?
Apart from the decline of the domestic and international markets,the rise of energy and raw materials prices increased the cost of manufacturing and further narrowed the profit margin.
该句中的profit margin 是不是经常在公司财报中出现,是如何计算出来的呢?
问题解答：
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