查询词典 density distribution

Based on that the density distribution function of technical service life about existing structures obeys blocking tail distribution,a conditional reliability and a hazard rate function of existing structures are established in this paper.

依既有结构的技术使用寿命密度函数服从截尾分布，建立了既有结构的条件可靠度和失效率函数，从期望效益与其望经济风险的优化分析着手，提出了一种既有结构剩余技术寿命的预测方法。

The comparison with conventional coplanar PDP has been made.The electric field distribution and the density distribution of particles at different time have been given.

给出了不同时刻两种结构放电单元中电场、各种粒子浓度的空间分布以及各种粒子的平均浓度随时间的变化关系。

The results show that the density distribution of ion and electron is similar to electric field distribution.

结果表明，在电离的初始阶段，电子、离子密度分布与场分布同步。

Based on the equivalent transformation from fuzzy possibility distribution to random probability density distribution, the fuzzy random failure probability calculation can be formulated easily, and a First Order and Second Moment method for fuzzy - random analysis is established.

提出了模糊随机可靠性分析的近似解析和数字模拟综合方法，基于模糊变量的等价随机化变换，可以方便地得到模糊随机失效概率的计算公式，并建立了模糊随机可靠性分析的一次二阶矩法。

According to the basic concept of Gamma function and Γ distribution,this paper gives out some expression including probability density,distribution function and basic numeric characteristic value.

依据Gamma函数及Γ分布的基本概念，给出了非均质性储层渗透率K的概率密度、分布函数以及基本数字特征的表达式。

Based on the theoretical probability density distribution function of local packing fraction, the shell side flow distribution was presented.

在此基础上，结合随机单元模型和自由表面模型，发展了一种新的、相对简单的计算壳程流体分布的方法。

The effects of pore width, temperature, and pressure on density distribution in the channel direction and on self-diffusion coefficient were investigated and analyzed, and the radial distribution functions of water in micropores at different temperatures were calculated.

分别考察了孔径、温度和压力对水在孔道方向的密度分布和自扩散系数的影响，计算了不同温度下水的径向分布函数。

Chinese Chiroptera ; Geographical distribution ; Environmental factor ; Species density distribution

中国翼手目；地理分布；环境因子；种数密度分布

The polarization curve is not sufficient for a reliable and unique validation of a PEMFC model since different parameters can lead to an identical polarization curve. A three-step validation approach is proposed for a complete and unique validation. These three steps are:(1) validated by the global polarization curve,(2) validated by the local current density distribution curve, and (3) validated by the cathode over-potential and anode over-potential versus current density curve. The results from the comparison of four flow-fields show that the PEMFC performance of the flow-fields decreases in order by interdigitated, metal foam, pin-type and parallel.

通过PEMFC参数敏感性研究发现，PEMFC性能受多种参数的影响，这些参数可分为非敏感性参数、敏感性参数和高敏感性参数；与阳极侧参数相比，PEMFC性能对阴极侧的参数更敏感；不同参数值的组合可以得到几乎完全相同的极化曲线，因此电池的极化曲线不足以用于验证数学模型的唯一性与可靠性；为验证PEMFC数学模型的唯一性与可靠性，提出了模型验证的三步法：极化曲线验证、局部电流密度验证和阳极总过电位与阴极总过电位验证。

The density distribution of the ESP plate current plays an important role in evaluating it. It is important to research on the device of steady, fast and convenient measuring the plate current density for the design of ESP and electrode configuration.

电除尘器板电流密度分布是衡量其极配形式优劣的一个重要参数，研究稳定、快速、方便地测出板电流密度的装置对电除尘器的设计和极配形式的开发都很有必要。

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。