red iron oxide造句怎么写

Study the pretreatment of cyanide tailings from Penglai gold smelting plant and make the optimal processing condition of cyanide tailings' pretreatment and red iron oxide 's production.

Then the whole thing was polished using a powdered iron oxide mixed with water, probably buffed up with a chamois leather.

aluminium powder red iron oxide polyester anti-rust paint

chlorianted rubber red iron oxide anti-rust paint