查询词典 evolution equation

At the same time, it puts out the theory of multi-space of technology action, analyses the super circulated procession of technology evolution and its pattern as well as the situs structure of technology orbit space, reveals the law and controlling method of technological evolution.

同时，还提出了地球表层学视野技术活动的多维空间的概念。分析了技术进化的模式、超循环过程和技术系统进化的形式模型及其技术轨道空间拓扑结构，并进一步揭示了技术系统进化的规律和控制方法。

According to instantaneous velocity fields and vorticity fields measured with SPIV, detailed analysis of the evolution of tip leakage vortex at both design and near stall conditions is presented in this thesis and the different phases of the evolution of the tip leakage vortex, the formation, becoming unstable and the interaction between small-scale vortices and the mainstream can be clearly observed in the experiment results.

SPIV测量结果表明压气机转子叶尖泄漏涡在设计和近失速状态下均存在形成、发展壮大和失稳分裂的演化过程。

On the basis of this ,the paper discussed the different evolution stage accompany with the core industry's evolution and the dissimilarity for produce evolve a stage of policy direction.

在此基础上，论述了产业集群伴随着核心产业的演变而产生的不同的演进阶段以及不同演进阶段的政策导向。

Extending the dynamic evolution model of technology standard with network externality to the case of multi firms, based on a stochastic dynamic game model and exploring intensively the effect of network externality on the technology evolution.

但对于新进入厂商而言，它可以选择兼容或不兼容；如果新进入厂商采用适配器和互联等兼容策略，则在位厂商只有掌握了足够的网络规模基础优势，才会拒绝新进入厂商与其兼容，否则它将会选择与新进入厂商兼容。

A good many mico-landblock of the early Neoproterozoic-Cambrian volcanic rock that distribute in the Tianshan orogenic belt and on its both sides, and the Carboniferous-Permian volcanic rocks that widely distribute in the Tianshan and adjacent regions are selected for subject investigating in this paper. Renewing the ocean-land format and ocean-land conversion process of Tianshan orogenic belt in the Paleozoic is the masterstroke for this paper. On the basis of detailed field investigation, many subjects, such asregional lithology、geochemistry、structural geology、volcanic sedimentology geology、sotope geochronology and synthesis analysis study of geophysics data, are adopted as instrumentality in the paper, this study lays emphasis on the formation, evolution and dynamics of early Neoproterozoic-Cambrian and Carboniferous-Permian volcanic rock in the Tianshan and its adjacent regions to find out Carboniferous-Permian volcanic rock property, eruptive sequence, time and space distribution characteristics, to resume and reconstruct evolution process of Carboniferous-Permian volcanic rock, and to explore connection of magmatism process and lithosphere stretching action of neopaleozoic ocean-land transformation in the Tianshan region.

本文选择分布于天山及其两侧的诸多微陆块上新元古代—早寒武世火山岩和天山地区广泛发育的石炭纪—早二叠世火山岩为研究对象，以恢复重建天山造山带古生代洋陆格局和洋陆转换过程为主线，在详细的野外工作基础上，综合运用区域岩石学、地球化学、构造地质学、火山沉积学、同位素地质年代学、区域地球物理资料综合分析研究等多学科手段，重点研究天山及其邻区新元代—早寒武世和石炭—二迭纪火山岩系的形成演化及其动力学，查明天山石炭纪火山岩系的性质、喷发序列、时空分布特点，恢复重建其形成演化过程，探索天山地区晚古生代洋陆转换过程中火山岩浆作用与岩石圈拉伸作用的关系。

The main purpose of careful observations on external appearance and internal anatomy is to throw light on the evolution of the modem family Pinaceae:To Pinus, attention is paid to the relation of different subgenera, sections and subsections; to Pseudoaraucaria and Pityostrobus, through analysis of the extinct types, trying to clear the evolution relations among all genera so as to finish the systematic tree is of most importance. Currently there are two hypotheses, i.e. Pinus center theory and Pseudoaraucaria branch theory.

对松科化石球果进行细致的外部形态及内部结构的研究主要目的在于演化关系的探讨上：对于Pinus，主要探讨这个属内各个亚属、组、亚组之间的演化关系；对于Pityostrobus和Pseudoaraucaria，通过绝灭类型的分析，探索松科内各个类群的演化关系进而完成进化树是研究的主要方向，现在这方面已有了Pinus中心说及Pseudoaraucaria分支说两个假说。

The simulation of CBM evolution history indicated that CBM evolution history in Sunan syncline area could be classified into four stages.

分析了本区构造史、埋藏史和热演化史，对宿南向斜煤层气演化史进行的模拟计算。

The text analysis the influential aspects through the theory of institution evolution, time series analysis and the theory of supply and demand, the result is that all the influential aspects impelled the evolution of ownership of forests system in Hebei province.

以制度变迁理论、时间序列分析和供求理论对相应因素进行深入分析，结果显示：诸多动因相互作用推动了河北省林权制度的演进。

This implies that at some point during the evolution of the human species a type of social learning leading to cumulative cultural evolution was evolutionarily advantageous.

这意味着，在人类进化的某个时期，导致累积文化进化的社会学习类型有着进化上的优势。

The thesis has investigated into the evolution of the matching frame of the two kinds of conjunctions "sui" and "dan" in Chinese history in an all-around way, and probed into the feature of their evolution ,and explained why they have evolved in such way from the typologic angle.

文章较全面地考察了汉语各个历史时期的"虽"类和"但"类连词匹配框架的发展演变，探究它们的发展特点，并从类型学的角度解释其发展演变的重要原因。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。