“按比例多计提之存货跌价准备与负毛利产品的少计提的跌价准备之差额”怎么翻译（英文）？

"According to the proportion of inventory write-down provision for many of the products with negative Maori provision of the write-down less difference."

Raises the goods in stock according to the proportion multi-ideas to fall in price the preparation little the idea to raise with the negative gross profit product falls in price difference of the preparation
对吗？呵呵