研究、讨论了聚丙烯纤维体积率与这种材料的断裂能、平均裂纹间距和平均裂纹宽度间的关系。
The relationship between the fracture energy and the cracking space and the cracking wide and the volume percentage of fiber is investigated and discussed.
不同树干高度处的平均木材密度、纤维长度和纤维宽度存在显著差异。
The significant differences also existed in wood basic density, fiber length and fiber diameter at different tree height.
不同树干高度处的平均木材密度、纤维长度和纤维宽度存在显著差异。
The significant differences also existed in wood basic density, fiber length and fiber diameter at different tree height.
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