seepage surface meaning in Chinese

渗出面
渗流面

It is concluded : the determination of the center spacing may be conducted under the permissible elevation of the exit line of seepage surface on slope surface downstream . in the end , the author has analysed the seepage field what the holes are placed two rows along the slope height
另外，在对比多种孔距的方案分析结果的基础上，得出结论：排水孔孔距变化对边坡渗流场沿边坡走向方向水头分布影响明显，布设排水孔应根据目标降深确定排水孔孔距。