underdrain怎么读，underdrain什么意思，underdrain短语和例句

1.An introduction is given to dewatering design, calculation of gushing water volume, and selection of pump for the construction of underdrain.

结合工程实际情况，介绍在有地下水地区的暗渠施工降水案设计、涌水量计算、水泵选择。

2.An introduction is given to dewatering design, calculation of gushing water volume, and selection of pump for the construction of underdrain.

结合工程实际情况，介绍在有地下水地区的暗渠施工降水案设计、涌水量计算、水泵选择。