Simultaneously, because the expenditureof capital construction and runing is costly, a lot of wastewater treatment processes are difficult to be used abroad.
同时废水处理工艺基建费用高，运行费用大而使得很多废水处理技术难以得到推广。
2
Since concrete faceplate rock dam has obvious virtues of economical expenditure and shorter construction period, its ratio in DAMS is increasing nowadays.
混凝土面板堆石坝由于其具有经济、施工工期短等突出优点，因而在水坝中的比重日益增大。
3
It will perfect cost management ofconstruction project, compensate reasonably construction expenditure, reduce construction project cost, increase its payoff and enlarge society fortune.