After this technology is mature,if fracturing material is made domestically,investment cost will be decreased. 如果该技术成熟后压裂材料实现国产化，可缩短投资费用。
It improves digester cost operation and reduces capital cost wherever sludge digestion is utilized. 当采用污泥消化时，它可改进消化器的运行并降低其基建投资费用。
I'm going to invest in low cost franchises. 我打算投资成本低廉的特许专营店。
The accounting rate of return is calculated by dividing the average annual profits from a project into the average investment cost. 用平均投资成本去除平均年利润即可计算出会计收益率。
