The index works by taking a weighted average of the price of imported iron and domestically produced iron ore to produce a composite number.
这种指数通过对进口铁和国产铁矿石取以加权平均价格以此产生一个合成数。
Esoko Ghana, a market information system, has created a commodity index with prices for many different crops that it sends by daily text message to farmers to help them price their produce.
加纳esoko是一个市场信息系统，它为多种农作物推出了商品价格指数，每天通过短信将指数发送给农户，帮助他们为自己的农产品定价。
Esoko Ghana, a market information system, has created a commodity index with prices for many different crops that it sends by daily text message to farmers to help them price their produce.
加纳esoko是一个市场信息系统，它为多种农作物推出了商品价格指数，每天通过短信将指数发送给农户，帮助他们为自己的农产品定价。
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