active element, Total:1 items.
In the international standard classification, active element involves: .
Available molybdenum, soil effective state, 8 effective elements in soil, valid state, Available molybdenum, soil effective state, eight active elements, soil available elements, soil available elements, active element, available elements in soil, state element, Eight available elements in soil, Available cadmium, Soil + effective state, state element, The 8 kinds of effective state elements in soil, iron available state, dtpa valid state, biologically available state.
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