The labour productivity of mining industry in Chile was increase d by a big margin ascribed by(1) the obvious improvement on copper deposite qua lity and(2) a vigorous push by technological transformation and innovations.
英
美
- 過(guò)去20多年智利采銅業(yè)的勞動(dòng)生產(chǎn)率大幅提高,原因有二:一是隨著(zhù)新礦山的開(kāi)發(fā),銅礦床質(zhì)量明顯提高;二是技術(shù)改造和技術(shù)革新的推動(dòng)。
