密度指数,density index
1)density index密度指数
1.On the basis of the Study of stand increment model on Japanese larch, the naural sparse model ofJapanere Larch everr-aged stand was simulatal by means of Reinekedensity index in this paper.在日本落叶松林分生长模型研究的基础上，用Reineke定义的密度指数模拟了日本落叶松同龄林的自然稀疏模型和日本落叶松不同初植密度的自然生长过程表，这为日本落叶松人工林的密度管理提供了有力工具。
2.To calculate thedensity index,the population related index(PRI) and the killing rate of mosquito larvae to evaluate the efficacy of the larvicides against mosquito larvae.方法选择水体,随机分为试验组和对照组,于试验前后一定间隔分别测定幼虫密度,并计算出密度指数、相关密度指数(PR I)和杀灭率。
英文短句/例句
1.The period of the highest density index is August.在5-10月间8月蝇的密度指数为最高。
2.The Research on SDI s Measurement Apparatus Based on MCU;智能型SDI污染密度指数测试仪的研究
3.bivariate exponential desity functions二变量指数密度函数
4.The density goes down exponentially with height.分子密度随着高度的上升而指数衰减。
5.Determination of Holdup by Volumetric Photoelectric Absorption Index and Density.用体积光电吸收指数和密度确定持率
6.Influnce of Age Weight and BMI on Bone Mineral Density;年龄、体重、体重指数对骨密度的影响
7." Natural gas-Calculation of calorific values,density,relative density and Wobbe index from composition"GB/T11062-1998天然气发热量、密度、相对密度和沃泊指数的计算方法
8.The specific gravity of a material is the ratio of its density to that of water and is therefore a pure number.物质的比重指的是物质的密度与水的密度的比值，所以是纯数。
9.Nutrient density is often expressed as the INQ (index of nutrient quality) of a food.营养密度通常用INQ(营养质量指数)来表示。
10.The expression of the nutrient density of a food is presented as the index of nutrient quality (INQ).食物营养密度的表述被作为营养质量的指数。
11.Population density (people per unit area) is an example.比如人口密度就是指单位面积的人口数量。
12.Alkane Hydrocarbon Density Refract Light Research,Line of Sexual Relations under Index;烷烃密度与折光指数间线性关系的研究
13.An ICA Algorithm Based on Exponential Power Family of Densities and Gaussian Mixture Densities Models基于指数幂族和高斯混合密度模型的ICA算法
14.The quantity of something per unit measure, especially per unit length, area, or volume.密度某物每单位测度的数量，尤指每单位长度、面积或体积
15.Shift of the Scaling Exponent at Stand Level and Its Mechanism Along Salinity and Moisture Gradients种群密度调控指数沿盐度和水分梯度的变化规律及其机理研究
16.Estimation of cotton canopy chlorophyll density and leaf area index based on red-edge parameters基于棉花红边参数的叶绿素密度及叶面积指数的估算
17.Relationship between Leaf Area Index and Plant Density of Zoysia japonica Steud. under Different Trimming Heights不同修剪高度下日本结缕草叶面积指数与密度的关系
18.Michigan Consumer Sentiment Index密歇根消费者信心指数
相关短句/例句
optical density index光密度指数
1.According to theoptical density index and colour of their solutions, the aromaticity of HA-2 is quite high, that of .采用波诺马廖娃等修改的丘林法，研究了分布于我国暖温带南沿黑粘土的几个典型剖面腐殖质组成和胡敏酸光密度指数的剖面分异特征。
3)exponential density gradient指数密度梯度
4)exponential density function指数密度函数
5)The population related index相关密度指数
1.ResultsThe population related index(PRI) of Culex and Aedes mosquitoes were 0.结果采取综合治理措施后,试验区库蚊和伊蚊的相关密度指数分别为0。
6)unsafe density parameter不安全密度指数
延伸阅读
密度指数分子式：CAS号：性质： 在衡量推进剂对导弹射程影响的关系工Ispρα中的α值称为密度指数，它表示推进剂密度对导弹射程贡献率的大小。α通常介于0与1之间，其值取决于发动机是导弹的第几级。α值不同，相同密度变化所带来的比冲等效变化不同。通常下面级发动机的α值较大，所以其等效的比冲值也较大。当两种推进剂Ispρα值相等时，则认为具有相等的能量性能。
