查询词典 density

The variation of density with depth is expressed as a function of n order polynomial function to deduce general gravity anomaly formula for 2 D density variable body having arbitrary and regular shapes.

本文把密度随深度的变化表示成任意次多项式函数，推导出了计算任意和规则形状二度变密度体重力异常的通用解析公式。

In the second part, by using uniform design and orthogonal design methods, some groups of mix test of foam lightweight with different component are conducted, the test data is analyzed by neural networks model and regression model, and optimum mix proportion is obtained. Orthogonal design for mix material considering density factor is presented, as well as uniform design for mix material adapting to different density. The mechanic characteristics of foam lightweight material and engineering characteristics differing from general material under an allround press are founded. Through the analysis of asymmetry settlement for Doulong sluice and the comparison of correct deflection scheme, the foam lightweight material shows some advantages in the load reduction.

在泡沫轻质材料的研究方面，利用均匀设计和正交设计方法进行了几组不同组分的泡沫轻质材料的配方试验，利用神经网络模型和回归模型对试验数据进行处理，得出最优配方；提出了考虑密度因素的混料配方的正交设计方法和适合不同密度时的混料配方均匀设计方法；研究了泡沫轻质材料的力学特性，并发现了在围压作用下所表现出的不同于一般材料的工程特性；论文将上述研究成果用于斗龙港闸工程的处理设计，通过对该闸的不均匀沉陷分析和各种纠偏方案比较表明，采用泡沫轻质材料进行减载处理有一定的优越性。

Topics covered include: density estimation incorporating such topics as kernel density estimates, nearest neighbor estimates, variable kernel methods, orthogonal series estimates, maximum penalized likelihood estimates

包括：密度估计（如：核密度估计，最近邻估计，可变核方法，正交序列估计，最大补偿似然估计法，带宽选择），非参数回归(如：核方法，样条方法，补偿似然估计，带宽选择，广义可加模型，)和bootstrapping方法。

Topics covered include: density estimation (incorporating such topics as kernel density estimates, nearest neighbor estimates, variable kernel methods, orthogonal series estimates, maximum penalized likelihood estimates, bandwidth choice), nonparametric regression (incorporating kernel methods, spline methods, penalized likelihood, bandwidth choice, generalized additive models), and bootstrapping.

非参数建模专题：非参数建模专题：基于计算机的非参数统计方法论。包括：密度估计(如：核密度估计，最近邻估计，可变核方法，正交序列估计，最大补偿似然估计法，带宽选择)非参数回归(如：，核方法，样条方法，补偿似然估计，带宽选择，广义可加模型，)和 bootstrapping 方法。

Its density is about two times more lead, iron three times (second only to the density of Iridium Osmium, weighing 22.5 tons per cubic meter).

它的密度约为铅的2倍、铁的3倍（密度仅次于铱的金属锇，每立方米重达22.5吨）。

When the pollen density of pollen donor exceeded the critical density, the gene flow frequency did not increased any longer, and the maximum gene flow frequency detected was equal to the outcrossing rate of pollen receiver in theory.

在其他因素都固定的情况下，如果花粉受体的异交率较高，那么到该花粉受体的基因漂移频率也相对较高。

Results: The proportional volume, numerical density of the granules in ovariotomy group were less than those in sham-ovariotomy and ovariotomy estradiol groups (P.001); the proportional volume and numerical density of ASG in myocardial cells almost came back to the normal level with small dose estradiol; along with the enhancement of estradiol dosage, the content of ASG in myocardial cells was more than those in sham-ovariotomy and small dose estradiol group (P.01), and showed a quantity-efficiency relation.

结果：切除大鼠双侧卵巢后，心房特殊颗粒的体密度和数密度与对照组及用雌二醇组比较明显减少(P＜0.01)，小剂量雌二醇可使大鼠心肌细胞心房特殊颗粒的体密度和数密度恢复到正常水平，随剂量增加，心肌细胞心房特殊颗粒的量也伴随增加，呈量效关系。

According to the analysis of density of state and charges density, we found that ozone molecular was chemically adsorbed on the bridge site of S1 as ozonide, and ozone molecule decomposed into one adsorbed surface oxygen atom and one free oxygen molecule.

态密度和电荷密度分析结果进一步证实了O3分子在S1上吸附是桥位化学吸附，形成表面臭氧化物，在S2上吸附分解为1个被吸附的表面氧原子和1个自由氧分子。

The noise frequency modulation signal was particularly analyzed. The Fokker-Planck equation of noise frequency modulation was presented and the Motion-Group Fourier Transform was used by converting the partial differential equation into the variable coefficient homogenous linear differential equations. Then the solutions were given by using the peano-baker series. So the probability density function of noise frequency modulation in the filter was given. On the basis of the probability density function the stochastic resonance of noise frequency modulation signal is analyzed.

首先建立了噪声调频干扰信号通过脉冲压缩雷达中频滤波器后所满足的福克尔－普朗克方程，然后利用群移傅立叶变换（Motion-Group Fourier Transform，MGFT）将此偏微分方程化成了变系数齐次线性微分方程组，并利用Peano-Baker级数法给出了该方程组的解，最后得到了噪声调频干扰信号通过脉冲压缩雷达中频滤波器后的概率密度函数，在此基础上研究了噪声调频干扰信号造成的随机共振现象。

I have calculated the species diversity for 3 layers (i.e. tree layer, shrub layer and herb layer) by means of various biodiversity index formulas and analyzed the relative species abundance using 9 models of the probability density distribution functions, such as, 3 Distribution (or Beta Distribution, Weibull Distribution, Lognormal Distribution, Poisson Distribution, Binomial Distribution, Negative Binomial Distribution ,Geometric Distribution, etc.. chi-square analyses were conducted on species distribution by using the chi-square test formulated by Pearson to test which distribution function is better, the result of chi square test made it possible to reject the other 8 distribution functions, theβdistribution function performs better than other probability density functions, it has a very close approximation, which can be used for the description of relative abundances of species in forest communities in this data set.

在相对多度研究上选用了九种概率分布模型，这九种概率密度分布函数依次为：贝塔分布、Weibull分布、对数正态分布、泊松分布、二项分布、负二项分布、几何分布、对数分布和奈曼A型分布，并进行了严格的卡方检验，结果表明：其它八种分布均被遭到拒绝，只有贝塔分布获得了通过，且拟合的结果非常理想。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。