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。
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。
The index works by taking a weighted average of the price of imported iron and domestically produced iron ore to produce a composite number.
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