The price per unit of resource may be linked to a price index of the product produced or of products in general;

每单位资源的价格可能与所生产产品或一般产品的价格指数相联系；

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The price per unit of resource may be linked to a price index of the product produced or of products in general;

每单位资源的价格可能与所生产产品或一般产品的价格指数相联系；

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