Effects of Hybrid Electro Conductive Elements on the Properties ofElectromagneticShield Effectiveness Larix Plywood STUDIES ON THE PROPERTIES OF ACCELERATED AGING OF LVL Shear Characteristic Research on Root-Soil Composite in Four Kinds of Roots of Trees and Different Root Buried Ways Factors of unfluence on quality evaluation of adhensive property on cataplasma The Difference of Bonding Strength between Radial and Tangential Surfaces of Larch with API Adhesive Root system distribution and biomechanical characteristics of Bambusa oldhami