counter dam meaning in English

副坝
前坝

The construction techniques and mechanics are approaching or even reaching the international advanced level in the asphalt concrete impervious deck of the recent completed tianhuangping pumped - storage hydroplant and the counter dam in the yangtze river which is being built with the height of 104 m , the volume of asphalt concrete core of 5x104m3
最近建成的天荒坪抽水蓄能电站上库沥青混凝土防渗面板和正在建设的坝高104m 、沥青混凝土心墙方量达5万多m ~ 3的长江三峡水利枢纽茅坪溪防护坝工程，施工工艺和施工机械化程度已达到或接近国际先进水平。