上面的盆子装满土并在底部安装向下渗透养分的管子。
The first basin would be filled with soil and a drain would be located at the bottom to allow leach of nutrients.
结果表明，减小渗透系数和扩散系数可以有效减缓衬垫底部浓度比的增加速度。
Decreasing hydraulic conductivity and diffusion coefficient may delay the increasing rate of the concentration ratio at the base of a GCL.
在这里，尾部船体底部看起来有点严重磨损，无论其外观修复环氧树脂已渗透到所有的裂缝造成的，在一个健全的结构。
Here the aft hull bottom looks a bit worse for wear, regardless of the looks the repairing epoxy has seeped into all the cracks resulting in a sound structure.
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