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Can some chemistry experts help me understand what does 形成 mean? As in the 80万吨纯碱，50万吨氯化铵，3万吨浓硝酸，10万吨硝铵，4.5万吨硝盐，90万吨海盐及各种气体的生产能力 are derived from the 30万吨合成氨? Or just simply they are the additional products in addition to the core product of 30万吨合成氨?