“暗渠”造句
它由竖井 、
暗渠 、 明渠和涝坝 ( 一种小型蓄水池 ) 四部分组成.
It consists of shafts, culverts , channel and flood dam ( a small reservoir ) composed of four parts.
由于工程老化,年久失修,北墅水库输水
暗渠墙体多处发生位移破坏,严重影响工程的正常使用.
In Beishu Reservoir, the displacement destruction appears at underground conveyance canal because of ageing without repair.
坎儿井是由一组
暗渠连接的竖井构成.
The construction technique involved a combination of well - type diggings linked by underground tunnels.