| http://www.w3.org/ns/prov#value | - At the same time, after the separation of two kinds of metals (gallium and arsenic, as one example) in the first and third submerged membrane separation tanks, the two kinds of metals (gallium and arsenic, as one example) can also be concentrated by the two-stage submerged membrane separation tanks (second submerged membrane separation tank and fourth submerged membrane separation tank).
|
