pith h wood 髓心材
The results showed: from pith outward, the tracheid length and diameter and cell wall thickness of Taxodium ascendens wood with or without intermittent flood all increased.
结果表明：间歇性淹水对池杉木材管胞形态的径向变异规律无影响，即不论有无间歇性淹水，池杉木材管胞长度、直径、壁厚，皆是自髓心向外呈增加趋势。
The results indicated that the fiber length and fiber width of the wood increased gradually from the pith to the bark at first, and then increased slowly when to reach the highest level.
结果表明：从髓心向树皮纤维长度和宽度呈逐渐增加的趋势，达到最大值后增加缓慢；
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