breast depth

The correlation between the breast diameter height form factor η and the diameter height ratio δ with respect to the change in tree age t has been analyzed based on the data obtained from China fir forests.

基于杉木林分调查数据讨论了林分胸高形数η和径高比δ随林龄 t变化的相关性 。

By analyzing the route of breast level about fitted dress, the additional bust dart is researched and the revised block included the additional bust dart on breast level is put forward.

通过对贴体服装胸围线路径进行分析,确定了两乳点间胸高追加量,提出了含胸围宽度追加量的补正原型,并针对前中施胸省的贴体类服装结构设计进行了应用分析。

Evergreen broadleaved forest in Tianmu Mountain National Nature Reserve of Zhejiang Province as an example, a digital elevation model (DEM) was used to analyze the difference of community biodiversity and basal area under different terrain.

以浙江天目山国家级自然保护区的常绿阔叶林为例,基于DEM在群落尺度上分析不同地形条件下群落物种多样性和胸高断面积的差异。

Four theoretical growth functions, the Mitscherlich, Logistic, Gompertz and Korf functions were applied to the basal area growth data of individual Western yellow pine ( Pinus ponderosa ) trees to model the basal area growth.

用 Mitscherlich、Logistic、Gompertz和 Korf4个理论生长方程分别对引种到捷克 Kostelec地区的西黄松林木个体胸高断面积生长过程进行了拟合 ,由最佳生长方程分别得出了胸高断面连年生长量、平均生长量和相对生长率随时间变化的函数 ,并对生长过程进行了分析。