Road construction is an important part of the whole infrastructure investment, which also plays a supporting role in the development of the national economy.
公路建设投资是基础设施投资中的重要组成部分,对国民经济的发展起到重要的支撑作用。
The principle part of the dam which plays a supporting role is made of moraines and gravel and its middle position setting asphalt concrete core-wall plays an anti-seepage role.
大坝主体由堆石坝或砾石组成,起支撑作用,中间设置沥青混凝土心墻起防渗作用。
It plays a supporting role for the development of rural economy and the increase of peasants' income to construct rural finance system.
一个良好的农村金融体系的构建对于农村经济的发展、农民收入的增长都将起着重要的支持作用。