The forest soil has relatively strong percolating ability to the sewage which is polluted by heavy metals, but there is a certain environmental capacity.
森林土壤对含有重金属的污水具有较强的滤污能力，但同时也存在一定的环境容量。
2
The aerobic bio-treatment process with the activated sludge method is a complex system which has the properties of essential nonlinearity and strong disturbance to treat city sewage.
城市污水活性污泥法好氧生物处理过程是一个具有本质非线性特性和强干扰的复杂系统。
3
Product Description: High concentration and strong de-form abilitty. can be mixed with cleansers when use. or can be put in sewage recycling boxes for de-forming purpose.