Industrial pollution in our town had supposedly turned students into living science experiments breathing in a laboratory's worth of heavy metals like manganese, chromium and nickel each day.
2
其目的是稳定污泥中的重金属铬离子，使其不再产生二次污染，从而达到真正的无害化、资源化。
The purpose of this new technology is to immobilize chromium, which can avoid the secondary pollution so as to make tannery sludge innocent and use it as a resource.
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