with grille block removal
Septic tanks to digest the gas from the water rise in the number of sludge with a floating to the surface soil layer, a certain degree of breakdown, some again into the pool, some with sewage outflow, with grille block removal.
基于1个网页-相关网页
with grille block removal
与格栅块拆除
以上为机器翻译结果，长、整句建议使用 人工翻译 。