分层

W. Meyer from the perspective of the static mechanical stratification of potential energy theory, a theoretical study of the hierarchical system and static mechanical dynamics of the two factions.

迈耶则从静力学角度提出了分层的位能学说，形成了分层理论研究的动力学体系和静力学体系两个派别。

This article recalls the problems of theory and practice of teaching in different levels.

本文在对国内外分层教学整体关照的基础上，对当前分层教学的理论及实践问题进行了反思。

Methods According to the classification of east, middle and west areas in China, as well as urban and rural, the multi-stage cluster probability sampling was used to select randomly total 17607 children under 5 years, whose weight and height were measured in standard method.

方法采用多阶段分层整群随机抽样的方法，按照东、中、西三类地区和城市、农村的分层原则，在全国选取17607名5岁以下儿童，测量儿童的身高和体重。

Since the number of trips is a non-negative integer, truncated, and of endogenous stratification, this study empirically analyzes its recreational benefits by the On-site Poisson and truncated negative binomial with endogenous stratification of the Travel Cost Method. Besides, this study adopts TNBES to see how the number of trips disperse and takes the consumer surplus to assess benefits. As to visitors' valuation, this research uses the ordered probit to do empirical analysis and then divides all satisfaction factors by the factor analysis and cluster analysis into four factors and two clusters, which then are taken as explanatory variables.

考量旅游次数为非负整数、截断、内生分层等特质，本研究在游憩效益方面，采旅游成本法中的现场波松(On-site Poisson)、截断式内生分层负二项(Truncated Negtive Binomial with Endogenous Stratification， TNBES)模型做实证分析，并於TNBES模型检定旅游次数之扩散情形，效益之评估采消费者剩余为计算标准；在游客评价方面，采次序波比模型做实证分析，并将游客对科博馆各项因素满意度以因素分析、集群分析，区分为四大因素构面与二大集群，纳入游客评价为解释变数，并探讨消费者剩余对游客评价之影响。

We next establish certain conditions which arc necessary and sufficient for a projective module over a cellular algebra to be injective.

给出了胞腔代数是标准分层代数的一个充分条件，利用这个条件我们介绍了一种归纳构造标准分层的胞腔代数的方法； 5。

The meaning of multi-objective and layered optimization is explained in detail and the steady-state optimization based on quadratic programming is presented to solve the multi-objective and layered optimization in the context of two-stage model predictive control formulation.

详细阐述了复杂工业过程的多目标分层优化要求的含义，在预测控制两级分层结构的基础上提出了基于二次规划的定态优化有效求解方法。

Since the new period, the discussions on the nature of historiography in China's historic circle, ranging from Mr. He Zhaowu "dichotomy" to Professor Zhang Genghua's "quadripartition", actually have promoted the search model of historical layering thought, signifying the maturity of the ideas in China's historiography.

新时期以来，我国史学界在有关史学本质问题的探讨上，从何兆武先生的史学"二分法"到张耕华教授的史学"四分层"，这实质上形成了一种关于"史学本质"问题"分层思考"的研究模式，从而体现了新时期我国史学理论研究思想开始走向成熟。

All parties agreed to use the tiered formula for tariff reduction in 2004 reached "July framework", but the details of the formula did not make specific provisions. So each group put forward their own tiered formula and the negotiating parties are currently evaluating the impact of different formula.

在2004年达成的"七月框架协议"中各方一致同意使用分层公式作为关税削减的主要方式，但是对该公式的细节并没有做出具体的规定，所以目前各集团分别提出了自己的分层减让方案，谈判各方正以此为基础进行测算，以评估对本国利益的影响。

This experiment, we take the oriental white oak and the water sampan as the objects of study, and carries on the lamination moisture content test, the thermo-element test temperature and the comb law survey lumber lamination stress to it.

本次实验，我们以青冈栎和水杉板为研究对象，并对其进行分层含水率测试、热电偶测试温度和梳齿法测量木材的分层应力。

Stratified cluster sampling method, to branches, grade, gender-stratified sample mean, in December 2009 granted to the Southeast University.

采用分层整群抽样的方法，以系别、年级、性别为分层指样，于2009年12月向东南大学发放。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。