Yav dhau los: Cov teeb meem tshwm sim hauv engineering daim ntawv thov ntawm polycarboxylic acid dej reducer thiab lawv cov kev daws teeb meem Tom ntej: Kev siv cov dej txo tus neeg sawv cev Post lub sij hawm: Lub Xya hli ntuj-01-2021
