Effect of White Birch Disk Characteristics on Drying Check Behaviors EFFECT OF SEEDLING DISK HEIGHT AND SEEDLING DENSITY ON TOBACCO SEEDLINGS GROWTH Feasibility Study on Domestic Rupture Disk Replaced Imported One in Particle Bombardment Comparative study on four membrane modules in membrane filtration process of Huanglian Jiedu decoction Advances on study of treatment of lumbar disk herniation by Chinese medicinal herbs