短语词组短语separation of leach residue 浸渣分选acid -leach residue 酸浸渣neutral leach residue 中浸渣cyanide leach residue 氰化尾渣chromium leach residue 铬浸出渣ammonia leach residue 氨浸残渣acid leach residue 酸浸渣zinc leach residue 锌浸出渣 返回 leach residue