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- Weibull probability density function (pdf) is used to describe the diameter of breast height (dbh) distribution for stand structure. 以韦伯机率密度函数来描述直径分布，表示其林分结构，性态值分布状况。
- A correlation analysis was carried out among the age of fine E. ulmoides clones and height, diameter of breast height (DBH), bark and leaf yields in the first six years. 对杜仲优良无性系前6年树高、胸径、产皮量、产叶量与树龄的相关关系进行了调查分析。
- Diameter of breast height 胸径
- V.Salvador into ZhejiangProvince was started in 1972.Four-year-old trees could be as tall as 8.36 m witha diameter of 10.36 cm at breast height. 种植的4年生树高达8.;36米、胸径10
- The results show that the water consumption of transpiration can be reckoned through standard specific conductivity of standard tree and the relative model between breast height diameter of tree and sapwood area. 结果表明，通过标准木的标准比导率和树木胸径和边材面积的相关模型，可以比较准确地推算出林分的蒸腾耗水量。
- The diameter of the tree-trunk is about 2 meters. 这树干的直径大约是2米。
- Measure the diameter of this circle. 量一下这圆的直径。
- We must gauge the diameter of wire first. 我们必须先测量电线的直径。
- The incidence of breast cancer increases with age. 乳腺癌的发病率随着年龄的增长而增高。
- The pond has a diameter of three hundred metres. 这池塘直径有三百米。
- This is infiltrating ductal carcinoma of breast. 乳腺浸润性导管癌。
- The best provena nee is No. 13242 which from Queensland whether in height, diameter breast height and volume increment or wind-resistance index. 树高、胸径生长及材积和抗风力等指标,均以昆士兰的13242号种源最好。
- Compared with the original region of L.leptolepis,Nagano-ken in Japan,the growth of tree and diameter at breast height had not difference. 与日本落叶松原产地日本长野县相比,林木的树高和胸径生长几乎没有差异。
- The pond has a diameter of 2 hundred meters. 这池塘直径有两百米。
- After planting, tree height (H), diameter at ground level (D) and diameter at breast height (DBH) were measured at regular intervals. 造林后，定期观测树高、地径或胸径。
- The interior diameter of a hole,tube,or cylinder. 内径洞、管或圆柱体的内径
- Must gauge the diameter of wire first. 我们必须先测量电线的直径。
- Population height, diameter breast height (DBH) and crown were studied in Cinnamomum burmannii population in Karst hills of Guilin, as well as their relationships. 探讨了桂林岩溶石山阴香种群的高度、胸径和冠幅以及三者间的相互关系,并采用分异指数量化了种群个体间高度、胸围和冠幅的差异程度。
- Measure the inner and outer diameter of big pipe. 用于测量大口径长钢管的内外径测量。
- Mean height, diameter at breast height (DBH) and stand biomass were 44.8%, 32.7%and 139.76% higher in the mixed stand than in the poplar pure stand respectively. 26a生沙棘-杨树混交林中的杨树平均株高比纯林的高44.;8%25，平均胸径粗增加32
