1979年至今综合回收了锡金属二百余吨，每吨成本五千元左右，收到了较好的经济效益。
From 1979 to now, more than 200 tons of tin have been recovered with one ton of tin costing 5000 yuan and economic profits better.
开采成本本身不高，而且外部投资正在将成本从矿山转移到市场。即便如此，澳大利亚可以以每吨25澳元的价格成本生产铁矿石。
It does not cost much to scrape it up, and the expense comes in moving costs from mine to market. Even so, Australia can produce iron ore for $25 a tonne.
在2003年，从巴西到日本运输铁矿石的成本从每吨15美元涨至30美元。
In 2003 it cost $15 to ship a ton of iron ore costing $30 from Brazil to Japan.
应用推荐