The results sho-wed that the percentage of predicted value ofVC, FVC, FEV1/FVC, MMEF, PEFR/H,V_(75)/H, V_(50)/H, V_(25)/H and Kco was decreasedin the exposed group. They had significantdifference as compared with control group.

• 接触组除RV、RV/TLC及DI_(CO)外,VC、FVC、FEV_1/FVC、MMEF、PEFR/H、V_(75)/H、V_(50)/H、V_(25)/H及K_(CO)均明显降低,与对照组相比,差别有显著性。