The maximum increment of stem diameter was at bottom, diminished up to branch height, then increased to crown.
人工林树干直径增量以地径处最大，向上逐渐变小，从枝下高处又开始增大，直到冠部。
The variation of two-way tensile stress, strain distribution and branch height in the axial compressive bulging and compound bulging were compared respectively.
分别比较了轴向压缩胀形和复合胀形中管件支管顶部双向拉应力、应变以及支管高度等指标的变化。
Under branch height has direct impact on woods growth and trunks form, so dynamic model established with under branch height can reflect the growth of woods and stands.
林木枝下高直接影响树木的生长和树干形状，建立林木枝下高动态模型可以了解林木或林分的生长规律。
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