The results show that, on the average, a ton of finished iron ore, crude copper and crude aluminum in 2000 have an abiotic material input of 4.19t, 476.36t and 103.97t and a water input of 4.82t, 204.94t and 1218.77t respectively.

• 结果表明；2000年平均一吨铁成品矿、粗铜和原铝的非生物性物质投入分别为4.；19t、476