超导体表观面貌并无变化.There is no change in the visual appearance of a superconductor.基价本月无变化, 但整体交易价格处于下滑态势.With no change in basis numbers, transaction figures slipped this month.痰炎症标志或细菌定植均无变化.No change in FEV 1 , sputum inflam...