还建立了林分密度指数动态预估模型。
And also makes a structure of density of stocking index dynamic estimate model.
选择林分密度指数(SDI)作为反映林分中林木之间平均拥挤指标。
Stand density index (SDI) was applied as a quantitative index to measure mean crowd degree between trees.
引入地位指数和密度指数可大幅提高林龄单因变量平均高生长模型的拟合度。
Repameterizing the average tree height growth model improved the fitting results a lot by introducing site index and density index variables.
然后介绍在岩体不同层次上变形破坏的自相似特性及破坏的临界密度指数分形特性。
Then, the self-similarity of deformation and fracture of rock mass at different structural hierarchies and the fractal natures of the concentration parameters of fracture are introduced.
经改进配方，处理的排污水的污泥密度指数(SDI)小于5.0，能够满足后续反渗透单元的进水要求。
Sludge density index (SDI) of effluent treated by improved formula is below 5.0, and it would meet the quality requirement of the influent of following reverse osmosis unit.
道路密度指数分析法有两类方法：基于光谱—空间结构的分类后比较法和基于光谱—空间结构的图像差值法。
The road density index analysis has two ways: the post-classification compare method based on spectral-spatial structure and the imagery difference method based on spectral-spatial structure.
林龄单因变量的蓄积量生长模型决定系数低，引入地位指数和密度指数再次参数化的生长模型可显著提高模型拟合度。
Single age variable stock volume growth model had low coefficient of determination, but it was improved a lot by introducing site index and stand density index in reparameterization.
基于反渗透原理，以89c52单片机为控制器，设计了水污染指数中的淤积密度指数(SDI)的自动在线测试装置。
Based on principle of reverse osmosis and used microcomputer 89c52 as controller, an automatic detection instrument of sludge density index (SDI) of water pollution is designed.
货币发行密度偏向于对抗与商品和服务相关的消费者价格指数。
The money circulation can be biased towards or against CPI related goods and services.
如果你的甘油三脂指数超过130，即使你的低密度脂蛋白数值比较低，你也有患心脏疾病的危险，更不用说较低的高密度脂蛋白数值了。
You're at risk despite a low LDL if your triglycerides are over 130, not to mention a low HDL, he said.
群落中光照的分布状况受乔木层的种类组成、密度与冠幅指数等因子的影响，且对下层植物分布有较大的作用。
The species component, density and index of crown cover in the tree layer effect on distribution of illumination and under plants in the plant community.
本文从密度和中子测井信息中提取的地层体积密度及含氢指数，分别同气层体积密度及含氢指数的下限值作比较，前者小于后者，直观指示为气层。
In this paper, the stratigraohic volume density and hydrogen index gained from the information of density-neutron logging are respectively compared with both the low-limit values of gas formation.
主要观察指标：年龄、绝经年限、绝经年龄、身高、体质量和人体质量指数与骨密度的相关性及回归方程。
MAIN OUTCOME MEASURES: the correlation between age, menopausal years, menopause age, height, body mass, BMI and bone density as well as the regression equation.
采用氧指数和烟密度分析方法，对无卤阻燃聚乙烯试样燃烧性能测试的影响因素进行了分析。
The factors of flammability testing of no-halogen flame-retardant PE were investigated by testing methods of the oxygen index and the smoke density.
测量种类净热值或总热值，华白指数，密度，最少空气需要量。
Kind of measurement Net or gross calorific value, Wobbe index, Density and minimum air requirement.
电子数密度在很长的一段时间内不遵循指数衰减规律。
The electron number density does not strictly obey exponential damping law in a long period.
研究者测量了受试者身高、体重和血压，计算出体重指数，并测出血清总胆固醇和高密度脂蛋白蛋白结合胆固醇的水平。
Investigators measured height, weight, and blood pressure, calculated body mass index, and obtained levels of serum total cholesterol and high-density lipoprotein cholesterol.
边缘密度、形状指数和分维数比较大，形状复杂，可以和较多的异质性斑块相连接，能较好地进行物质和能量的交换。
The edge density, shape index and fractal dimension index is high, the patch shape is complicated, which shows that the material and the energy exchange can be carried on preferably.
在对数据进行清理的基础上，分析了各站坐标分量噪声的功率谱密度，计算了表征各分量的噪声特性的谱指数。
On the basis of data processing, we analyze the power spectrum density of coordinate component noise at each site and calculate the spectral indexes manifesting the noise property of each component.
分析了北京大屯科技站水稻叶面积指数LAI、叶绿素密度CH。
The paper studied the variational process of leaf area index LAI, leaf chlorophyll density ch.
磨木浆材和化学浆材产量随立地指数和密度的增大而增加。
Both yields of ground wood timber and chemical pulp timber increase with increase of site index and planting density.
林分和单株的树干、树枝、树皮生物量组成比例均随立地指数、造林密度的变化无明显的差异。
The ratios of stem, bark and branch biomass to total biomass of stand and individual tree are basically steady in different site index and planting density.
目的：分析年龄、绝经年限、绝经年龄、身高、体质量及人体质量指数对绝经后妇女骨密度的影响。
OBJECTIVE: To analyze the effects of age, menopausal duration, menopause age, height, body mass and body mass index on bone mineral density (BMD) in postmenopausal women.
通过回归分析的方法对标准分级道路功率谱密度与相应国际平整度指数之间的关系进行了研究。
The correlation between the standard classified road power spectral density (PSD) and international roughness index (IRI) was discussed by using regressive analysis.
分子密度随着高度的上升而指数衰减。
讨论了难燃接枝聚合物聚醚多元醇的用量对聚氨酯软质泡沫密度、氧指数和力学性能的影响。
The effects of FRGPPP content on density, oxygen index and mechanical properties of FPUF were investigated.
讨论了难燃接枝聚合物聚醚多元醇的用量对聚氨酯软质泡沫密度、氧指数和力学性能的影响。
The effects of FRGPPP content on density, oxygen index and mechanical properties of FPUF were investigated.
应用推荐