查询词典 value distribution

Producted RF and CRF aerogels by process of sol-gel technics, dynamic-exchange, CO2 supercritical drying, and procedural increase in temperature carbonization methods, which have eximious capability and nanometer network structure; Systemic analysis various factors which effect gel course, such as ratio of reactants and the dosage of catalyst, and probed into the better experiments conditions(the concentration of resorcinol and formaldehyde is more than 2% and the value of R/C is between 50 and 300); During gel course , primary investigated the viscosity curve and particle size distribution of sol-solution, and analyzed the reason of catalyst dosage effects particle size of gel, and confirmed that the up-growth of gel follows the theory of " polymerize increase ".The experiment results indicated that ultrasonic with unvarying temperature disposal shortened gel time and optimized quality of gels, and the factors of ultrasonic effect gel reaction velocity were analyzed; Prepared organic aerogels using compounds of resorcin and hydroquinone substitute resorcinol reacts with formaldehyde the first time, and also optimized the proportion of resorcinol and hydroquinone (the proportion of hydroquinone in 10%～40%).

采用溶胶-凝胶工艺结合动态溶剂交换、CO2超临界流体干燥与程序升温碳化方法制备出性能优良、具有纳米网络结构的RF与CRF气凝胶；深入研究了反应物配比催化剂用量等条件对凝胶过程的影响，得到了较佳的RF凝胶制备条件(RF浓度应大于2%，R/C值取50～300)；初步研究了凝胶过程中的粘度、粒径变化情况，分析了催化剂用量影响凝胶中粒子尺度的原因，在实验上印证了凝胶生长遵循"聚增长"的理论；通过引入超声波改进了RF气凝胶的制备工艺，缩短了凝胶反应时间，提高了凝胶品质，并探讨了超声波促进RF凝胶反应作用的原因；首次用对苯二酚与间苯二酚复配制备了混合有机气凝胶，优化出复配比(对苯二酚含量为10%～40%)。2。

"The Ricardian Theory of Value and Distribution", 1952, JPE .

"李嘉图的价值理论和分配"，1952年jpe。

Jpe."The Ricardian Theory of Value and Distribution", 1952, JPE .

"李嘉图的价值理论和分配"，1952年

The characteristic expression of multi-value function by using Riemann surfaces is discussed, and the mapping from s-plane into w-plane is also analyzed. Then the relations between pole distribution of fractional-order systems and time-domain response are provided.

本文通过分析多值函数特性在黎曼平面中的表达以及，s-平面与w-平面的映射关系，给出了分数阶线性定常系统极点分布与时域响应的定性关系。

The firm believes that it can increase its market share to 20% by investing $10 million in a new distribution system (which can be depreciated over the system's life of 10 years to a salvage value of zero) and spending $1 million a year in additional advertising.

该公司认为，它可以提高其市场占有率为20 ％，投资1000万美元在新的分配制度（可折旧系统的寿命为10年至残值为零）及开支一百万元，一年的额外广告。

Acquired conclusion was that the sample mean value submitted to normal distribution, and the sample variance was composed of a number of linear sum of random variable submitted to Chi-Squared distr.

得出的结论是：样本均值服从正态分布，样本方差由若干个服从卡方分布的随机变量的线性之和组成；样本均值的期望等于各管落点期望的算术平均值，方差为各管方差的算术平均值；样本方差是各管落点总体平均方差的无偏估计，方差与各管落点散布的差异相关；样本均值与方差相互独立的充要条件是：各管落点属于独立同分布样本。

We have discussed the expected value and variances of the OLS estimators, but to perform statistical inference, we wish to know the full sampling distribution.

我们已经讨论了OLS估计量的期望和方差，但是为了进行统计推断，我们仍希望知道样本分布。

The "exact" approach entails deriving a formula for the sampling distribution that holds exactly for any value of n.

"准确"方式需要对任何n的取值都得到样本分布的精确表达式。

In the meantime, the peak value of structure resonance contributes little to the response. The distribution of vertical displacement and wave bending moment of transverse section, which is along the direction of the floating structure length, appears unsymmetrical character. According to the wave scatter diagram of BI sea area of northwest pacific, which is in fairly calm condition, the amplitude values of long term prediction of wave bending moment in midsection and deck bending stress are quite large.

根据西北太平洋B1海区波浪散布图计算的波浪弯矩和舯剖面甲板弯曲应力的长期预报值是相当高的，日本的箱式浮动机场的概念设计中，浮体结构设置在离岸很近的平静水域且外围设置了防波堤，这可能是出于改善超大型浮体结构的运动性能和为了满足结构强度要求。

Objective To explore the application value of correspondence analysis in the distribution of disease seasonality.

目的探讨对应分析方法在疾病季节分布中的应用。

I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像，后来回台湾，甚至去年在北京，居然也四处看见她的海报，才惊讶她的魅力之大。