演变

Further, by using the set of equations derived above, a modified potential vorticity equation more suitable for the study of mesoscale systems is developed, in which the term of divergence is involved explicitly on the right hand side.

进一步，利用此新方程组，推导出适用于中尺度系统研究的新的位涡方程，新位涡方程突出的特点是，与中尺度系统发生、发展密切相关的散度项显式出现在方程的右端；这为研究中尺度系统演变过程中，辐合、辐散效应对系统位涡收支的影响、进而研究中尺度系统发生、发展的热、动力学过程提供了方法。

The economic growth accounting of China's provinces between 1990 and 2004 finds some results like the following: no matter whether human capital was introduced or not, there were technological inefficiencies in most provinces'economic activity which were pure technological inefficiencies or scale technological inefficiencies; technological change, capital deepening and human capital accumulating all promoted labor productivity, but technological efficiency change played a negative role during these years as a whole; the descending order of provincial difference of labor productivities'changes brought out by each factor was technological change, capital deepening, technological efficiency change and human capital accumulating; each province's pure technological efficiency change or scale efficiency change not only had different size, but also different evolution route.

中国各省在1990～2004年间的经济增长核算结果表明：不论是否引入人力资本，大多数省份的经济活动都存在着技术无效率，这既包括纯技术无效率，也包括规模无效率；技术进步、资本深化和人力资本积累都促进了劳动生产率的提高，而技术效率的变化整体上来说在其中起阻碍作用；各因子引致的劳动生产率变化的省际差异从大到小依次为技术进步、资本深化、技术效率的变化和人力资本积累；各省的纯技术效率或规模效率的变化不仅大小不同，而且它们的演变路径也不一样。

Understanding whether climate changes such as desiccation may have played a role in this process is certainly an important objective of the project.

这个研究计划的一个重要目标，是了解气侯变化，如干旱在这个演变进程中所起的作用。

Bureaucracy, the rule of no one, has become the modern form of despotism.

"官僚机构，不属于任何人的统治，却正在演变成为现代形式的专制。"

Unemployment brings out the destructibility and minus effects; not only damages the basic guarantee in lives and mental ability, but also harms the social and economic stabilization; in some degree it might change into a drastic social-political issue.

失业所带来的破坏作用和负面影响，不仅仅危及到失业人员的基本物质生活和心理承受能力，而且危及到社会安定，对经济的持续、稳定、健康发展产生极其不利的影响，恶化到一定程度时可能演变为严重的社会政治问题。

Unemployment brings out the destructibility and minus effects not only damages the basic guarantee in lives and mental abili ty , but also harms the social and economic stabilization in some degree it might change into a drastic social-political issue .

失业所带来的破坏作用和负面影响，不仅仅危及到失业人员的基本物质生活和心理承受能力，而且危及到社会安定，对经济的持续，稳定，健康发展产生极其不利的影响，恶化到一定程度时可能演变为严重的社会政治问题。

The shoe press has had a significant effect on the overall development of the press section of modern papermachine.

靴型压榨对现代化造纸机压榨部的发展有重要影响，介绍了靴型压榨的概念、构成、对产品性能的影响以及形式的演变。

This research is to study the devolvement of soil quality during degradation and restoration.

揭示子午岭林区土地退化／恢复过程中土壤质量演变及其与土壤侵蚀的关系。

The evolution of that project appears to be the Devon GTX.

的演变该项目似乎是德文GTX的。

This is the largest classification of vertebrate groups doors Asia and as far as the Devonian have been derived by many to the brink of lineage.development and evolution has become a complex shape of fish.

这是脊椎动物亚门中最大的分类类群，远在泥盆纪就已派生出很多的边缘支系，发展和演变至今成为各种复杂体形的鱼类。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。