查询词典 density distribution

In order to figure out the use of compression in the wood preservation aspect, the authors compared the compressed wood samples pretreated with hot water bath or water spraying and compressed preservative-treated wood, which was treated with ammine copper quat-type D preservative solution. The liquid absorption and recovery rate of compression deformation of the compressed wood were determined, as well as the surface hardness, distribution of density and CuO retention in the thickness direction of CPW.

摘要为研究压缩处理在木材防腐方面的应用，该研究测定了经过不同水浴和喷水预处理后的径向压缩木材在胺溶铜季铵盐--D型防腐剂中浸泡后的吸液量和变形回复率，并测定了由此制备得到的压缩防腐木的表面硬度、厚度方向上的密度分布和CuO保持量分布情况。

Difference of apeak distribution of dry weight of root in different density treatments. The root shoot ratio was increased gradually during maize growth process, Tendency of root - shoot ratio was displayed slow-fast-slow regular pattern.

根系干重在土壤中的水平分布情况为，不同密度处理根量均呈现以植株中心由内向外逐渐减少的变化。

Secondly, the asymptotic series are used to evaluate the density function of heavy-tailed Rayleigh distribution, and an efficient three-step method is proposed using the interpolating polynomial fit.

其次， 本文使用渐近级数计算拖尾Rayleigh分布的概率密度函数，基于插值多项式拟合，提出了高效计算密度函数的三步方法。

By density functional theory B3LYP method with 6-31G basis set, the geometry and electronic structure of the natural inhibitor and derivatives of Adenylosuccinate synthetase were optimized and their thermodynamic stability was also analyzed. The relationship between their electronic structures and bioactivities were discussed based on the Mulliken bond order, atomic net charge distribution and molecular surface electrostatic potential.

利用密度泛函B3LYP方法选择6-31G基组对腺苷酸琥珀酸合成酶天然抑制剂及其衍生物的结构进行优化，并对其稳定性进行了分析，同时采用Mulliken键序、原子电荷分布、表观静电势等对AdSS抑制剂及其衍生物电子结构与其生物活性相关性进行了理论研究。

The new model introduces a modified term M , which includes the contribution to total energy from the angular distribution of an atomic electronic density, and can fit the negative Cauchy pressure of such as Cr.

本文导出了一个普适分析型嵌入原子模型，该模型引进了一个描述原子电子密度分布的非球对称部分对系统总能量贡献的修正项M，它能正确拟合具有。。。

Finally,we obtain the singular matrix Dirichlet andthe singular matrix Beta distribution,and the density functions of them are ob-tained.

最后，由退化矩阵Liouville分布构造了退化矩阵Dirichlet分布、退化矩阵Beta分布，得到了它们的密度函数的表达式。

The discrete probability density function of beta distribution was used to express the organs' expansion laws, which was flexible enough to fit a variety of expansion forms.

用离散型Beta概率密度函数描述植物器官的扩展规律，可灵活地适应多种扩展曲线类型。

High density polyethylene with wide or bimodal molecular weight distribution was prepared by using bimetallic composite catalysts.

采用双金属复合催化剂制备出了宽或双峰分子量分布的高密度聚乙烯，并对所合成出的聚合物进行了结晶行为分析、分子量及分子量分布测试。

Results of DSM show the overcrowding effect can lead to complex dynamics and bimodal distribution determined by the intensity of density dependence in immigrants.

这些结果说明动态行为的复杂性，不仅可用于表征研究物种的特性，而且可以表明该物种的续存能力与灭绝风险。

In the pipe application field, high requirements of stiffness and impact strength of the resin require the use of high density polyethylenes with higher molecular weight and bimodal molecular weight distribution.

在管材的应用域上，具高规格的韧性与冲击强的树脂通常需要使用高分子与双峰分子分布的高密聚乙烯为材质。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。