在物理力学性质指标中成熟材的基本密度、气干密度、顺纹抗压强度、抗弯强度、抗弯弹性模量及冲击韧性高于幼龄材；
In physical and mechanical indexes, the basic density, air-dried density, compression strength parallel to grain, MOR, MOE and toughness of mature wood are higher than that of juvenile wood.
力学性能测试结果表明：添加稀土的富铁胎体及其金刚石复合材料的抗弯强度、 冲击韧性和孔隙度均有明显的改善。
The results of mechanical test show that is bending strength, toughness against impact and void ratios can be improved after the rich iron matris is added with rare earth.
适当的微波处理和汽蒸处理使试材的抗弯强度、抗弯弹性模量和冲击韧性并不明显降低。
There was little change in the bending strength, Young's modulus and dynamic ductility of the test wood treated by microwave irradiation and steaming appropriately.
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