breast-height的意思|示意

The genetic gains of superior families selected by progeny tests on early tree height, diameter breast-high and volume growth were 8.24%, 14.33% and 24.16% respectively.

通过子代测定选出的优良家系，其有性后代在树高、胸径和材积早期生长的遗传增益分别为8.24%，14.33%和24.16%。

Water inlet&outlet and wave breaking chambers are arranged for relieving slab and breast wall to reduce the reflected wave height alongside the berth.

为减少码头前沿的反射波高，巧妙地在卸荷板和胸墙中设置进、出水孔和消浪室。

She has recently had even larger breast implants fitted and her next procedure promises to be her most extreme yet as she plans to undergo height lengthening surgery.

为更接近愿望，最近她接受了进一步的隆胸手术。她下一步计划进行增高手术，这将是所有整形手术中最极端的一项。

Wood basic density and fiber morphological features in the breast-height position for512-year-old excellent clones of Populus tomentosa Carr. (1CK)were measured and analyzed in this paper.

对12年生5个毛白杨优良无性系（另1个作对照）胸高处木材的基本密度和纤维形态进行了测定分析。

Factors involved in the model are: tree height. diameter at breast height. bark thickness at breast height. height of first dead branch and height of blackened trunk.

判别因子分别是：个体的树高、胸径、胸高处皮厚、第一枯枝高和树干熏黑高度。

Parabolic curve function, power function, Richards equation and single molecular equation, related tree height to diameter at breast height and widely used in forest gap model, were analysed.

为了更准确地描述树高与直径的关系，文章综合分析了广泛应用于林窗模型中的四个数学方程，即二次曲线、幂函数方程、理查德方程和单分子方程。