For each item, calculate the total cost for that item using the quantity passed from the shopping cart information and the price obtained from the product catalog information in the database.
对于每个货品，使用从购物车信息传递的数量和从数据库中的产品目录信息获取的价格，计算该货品的总价。
Now, let's check the items in the contract. Let's start from the names of the commodity, specifications, quantity, unit price, the total payment and shipment.
现在，让我们检查一下合同中的条款，让我们先从品名、规格、数量、单位价格、总额以及货运来看吧。
The methods of producing copper sulphate from copper scrap is introduced in this paper, and the factors which effect total quantity of dissolve copper are studied in detail.
介绍了废杂铜生成硫酸铜的新工艺，并对影响溶铜总量的各因素进行了研究。
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