bottom sludge meaning in English

残渣
底部淤渣

Prevents buildup of tank bottom sludge
防止油箱底部沉积油泥。
The percolation process of wsps is taken as a unit , and a simplified contamination percolation process combined functional model is put forward , in which includes four layers as bottom sludge layer , substrate layer
把稳定塘中污染质的下渗过程看作一种单元系统，提出了概化的稳定塘中污染质下渗单元耦合功能模型，对各功能层的功能进行了描述。