主要问题

The main problem what this thesis deals with is how to realize the professionalization of initial teacher education.

论文研究的主要问题正是如何实现教师职前教育的专业化。

Chapter 4 of this dissertation has carried out a physical simulation study about the processes of formation and laws of evolution of the fan delta in Baimiao gas field. Based on the results of the study about the geological background in this area, this paper has discussed about the sedimentation facies marks for the fan delta in Baimiao gas field, worked out a detailed proposal about the development of physical simulation experiment about the fan delta, and described in detail the general laws and major controlling factors governing the sedimentation processes of the fan delta. A detailed measurement was made about the experimental results, and a systematic comparison was made relative to the prototypic characteristics. Based on the observation and description about the experimental processes and the analyses about the experimental results, this paper has give

在本章中，指出了数值模拟研究的基本特点，给出了扇三角洲形成过程的基本控制方程和数学解法：在此基础上设计和开发了扇三角洲形回成过程的平面二维数值模拟软件，并对计算过程中所遇到的主要问题一计算速度较慢开展研究，对比了以天、旬、月为时间单元进行汁算对沉积结果的影响，研究认为，在流量无突变的情况下，可以适当增长计算的时间步长和适当放松精度要求；根据白庙气田扇三角洲的基本地质特征设计了数值模拟计算的基本条件，以月为单位，计算了扇三角洲四百年的形成过程及演化规律，并以50年为单位输出沉积结果；本章最后还对数值模拟方法及结果进行了讨论。

It has been summarized that domestic coal-blending study in ten years, included two major problems concerning coal blending ratio and pyrogenation and combustion of mixed-coal.

综述了国内10年来混煤研究的情况——混煤掺烧配比和混煤热解与燃烧两个主要问题。

Querying in distributed database system is more complicated than in centralized database system.

是分布式数据库系统的主要问题之一。

The safety of radioactive sources is a primary issue of radiological protection in China.

放射源的安全已成为我国当前辐射防护的一个主要问题。

Finding a way to restain and expand those amount and produce new energy for substantial economic development has become a major problem for Zhashui's future development.

如何稳定并扩大旅游人数与旅游收入，为柞水经济发展提供持续的动力，已经成为柞水溶洞未来发展的主要问题。

On the Presuppositions of Group Selectionism DONG Guo-an ( Research Institute of Philosophy, South China Normal University, Guangzhou 510631, China)One principal problem of the debate about level of selection has been the importance of group selection.

关于选择层次的一个主要问题是：群体选择概念在解释诸如利他行为这类性状的进化中是否必要？

It is possible that the survey itself was flawed, perhaps asking leading questions that subliminally led the respondents to answer in favor of keeping the current all female admissions policy.

很可能调查自身是有缺陷的。或许所问的主要问题都下意识地引导调查对象的回答有利于维持现行的全女生入学政策。

This is the big problem for us, the Swati people, also for Buner, he said.

这是我们、斯瓦特人民，以及布纳尔人民关心的最主要问题。

To optimize the industrial structure, the in tensive cultivation in agriculture should be developed, the second industry should be reformed with high and new science and technology and the level of t hird industry should be enhanced.

分析了我国产业结构的现状和存在的主要问题，提出要从农业集约化经营、运用高新技术和现代科技成果改造和发展第二产业，大力发展第三产业，提高第三产业水平等方面实现我国产业结构的调整和优化升级。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！