短语词组短語separation of leach residue 浸渣分選acid -leach residue 酸浸渣neutral leach residue 中浸渣cyanide leach residue 氰化尾渣chromium leach residue 鉻浸出渣ammonia leach residue 氨浸殘渣acid leach residue 酸浸渣zinc leach residue 鋅浸出渣 返回 leach residue