演变

The paper shows the structure evolution of bevel and hypoid gear generator as well as its working principles.

介绍螺旋锥齿轮铣齿机的切齿原理和结构演变历程，并对其各自的优缺点进行了比较，为该类机床的设计提供了理论依据。

The national policy of Canada experienced the evolvement from assimilation and biculturalism to multiculturalism, the multicultural policy not only mollified the ethnical conflict, but also availed to resist the permeation of American culture, the tolerance it manifests becomes the substance of national identity of Canada.

加拿大的民族政策经历了从民族同化到二元文化再到多元文化政策的演变，多元文化政策不仅缓和了国内的民族矛盾，更有利于抵御美国文化的渗透，它所体现的包容性成为加拿大民族认同的实质。

Formation and evolution of binary structure in our country are closely linked with China's financial system.

我国的城乡二元结构的形成和演变与我国的财政体制有着密切的联系。

Biochemist James Lovelock writes of this embrace, The evolution of a species is inseparable from the evolution of its environment.

生物化学家詹姆斯洛夫洛克就这种相拥状况写道：物种的进化与其所处环境的演变密不可分。

This paper also summarizes the scientific issues the current biogeography focuses on, with an emphasis on the applications of biogeographical approaches in biodiversity conservation.

学科思想的演变也使得生物地理学研究内容发生变化，本文还综述了当今生物地理学所关注的科学问题，并重点论述了生物地理学方法在生物多样性保护中的应用。

In brief, this article is to put the individual research into the collective research of community which to compare and explore the film biography"s works of this special theme lognitudinal and transverse. With the Chinese and the Western comparison of film biography and with the evolutive course of Chinese ones at various stages, this article lead the theory out of the history and analyse the person by the theory which stand out DingYinNan"s creative status and features who is the great master of Chinese biographic moviedom.

总之，这篇论文是将个体研究放入集体群像研究之中；横向、纵向的将传记片这一特殊题材的影片作品加以对比与探究；在中西传记影片的异同比较中在不同时期中国传记影片的演变过程中，以史带论，以论析人，最终突显出中国传记影坛大家——丁荫楠的创作地位与特征。

The upthrust of this argument is that the emergence of a government policy is, to a large extent, biographically determined.

此论点更进一步主张，在多数广泛的程度上，政府政策的产生是发展演变决定的。

What to study turns into a regulation problem biologically here.

这里研究的是生物的演变规律问题。

Planaria is the most simple in three blastoderm animal, its nerve system is ladder-like.This is the bio- evolution of the nerve system.

三胚层动物扁形动物涡虫的神经元连接成梯形神经系，有原始的脑和两条神经索，反映了原始生命反射功能的进化和演变。

That's things blending and evolving.

那是配合得并且演变的事情。

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。