The characteristics of transverse fracture of Chinese Fir from macro and microcosmic, and the mechanism of strong toughness of wood was studied in this paper.
以杉木为研究对象从宏观和微观上研究了木材横纹断裂的性质，并阐述了木材的强韧机理。
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.
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；
The impact toughness of larch wood can be improved in some microwave irradiation experiments, which is arisen from the release of growth stress of larch wood.
有时高强度微波处理能够使落叶松木材的冲击韧性有所提高，这与木材内部的生长应力一定程度的释放有关。
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