The population diameter structure can well be described by using nonparametric kernel method based on the sample data without assuming the population diameter distribution.
应用非参数核密度估计方法，可以由样本直径结构很好地描述总体直径结构，而无需假定总体的直径分布。
The diameter structure, importance value, distribution pattern and survival curve of broad-leaved Korean pine of over-logged forest in Jingouling forest Farm was analysed.
对金沟岭林场阔叶红松过伐林直径结构、重要值、分布格局以及存活曲线进行了分析。
The diameter distribution, surface morphology, thermal properties and structure of the microcapsules were investigated by means of laser particle size analyzer, SEM, DSC and FT-IR, respectively.
利用激光粒径分布仪、扫描电镜、差示扫描量热仪（DSC）和傅立叶转换红外光谱仪分别研究了微胶囊的粒径分布、表面形态、热性能和壳结构。
The diameter structure, the height structure, the density and the distribution pattern were worked out.
分析了梭梭种群的径级结构、高度结构、密度和空间分布格局变化等。
The diameter distributions were simulated by the modified exponential distribution function for describing the stand structure, based on inventory data of broad-leaf forest in Changbai Mountain.
以长白山阔叶林三类清查资料为依据，采用修正指数分布式拟合并预测林分的直径分布。
The stress relief method of hole diameter deformation was used to measure the stress distribution of the pillar structure in the mined area in a big phosphate mine.
采用孔径变形应力解除法，测量了某大型磷矿采空区中矿柱结构的应力分布规律；
The stress relief method of hole diameter deformation was used to measure the stress distribution of the pillar structure in the mined area in a big phosphate mine.
采用孔径变形应力解除法，测量了某大型磷矿采空区中矿柱结构的应力分布规律；
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