相互组合

Investment portfolio theory is financial assets, financial assets investment divisibility, mobility and features such as compatibility, so investment in financial assets, do not have to consider the scale of investment, the investment of time constraints, as well as the number of investment projects and other factors, as long as the taking into account the relevance of financial assets, risk, reward and their mutual relations, and on the basis of risk - reward the choice to invest in financial assets to achieve the optimal choice.

证券组合理论的投资对象是金融资产，金融资产投资具有可分割性、流动性和相容性等特点，因此在进行金融资产投资时，不必考虑投资的规模、投资的时间约束以及投资项目的多少等因素，只要考虑各金融资产的相关性、风险、报酬及其相互关系问题，并依据风险——报酬的选择，可实现金融资产投资的优化选择。

For constructing strong combined promoter to enhance the foreign gene expression in Fowlpox virus vector, four oligonucleotides were synthesized according to the essential structure of the vaccinia virus nature promoter P7.5 and were used for generating early and late promoters.

要提高外源基因在鸡痘病毒载体的表达量，必须使用强启动子来控制表达。为构建较强的启动子组合，根据痘苗病毒天然启动子P7.5的结构，人工合成4条寡核苷酸，形成一个早期启动子和一个晚期启动子，其首尾可相互连接。

For distinctly understanding the mutual influence between the structural units, a series of compounds from five and six-membered C-N heterocycle substituting the tetrazine ring are designed. These several types of compounds are studied by means of the quantum chemistry calcualtions and discussed the influence of the structural units upon the main performance (heat of formation, density, velocity and pressure of detonation) and found out the best combination of performance.

为了更清楚的了解结构单元之间的相互影响，设计了六元氮杂环和五元氮杂环取代1，2，4，5-四嗪得到了一系列化合物，采用量子化学计算方法对它们进行了详细的理论研究，讨论了各种氮杂环的改变对四嗪类化合物性能(包括生成热、密度以及爆速和爆压等)的影响，并找出爆轰性能较好的结构单元组合。

At present, problems such as indefinite subject, inexplicit division of earning, and bad judgment system, exist in this mode of cooperation. Therefore, to improve the enterprise technological innovation ability and competition ability, enterprises, universities and research institutions must coordinate with one another for the best combination of talents and funds.

目前，我国这种模式存在主体地位不明显、利益分配不明确、评价体系不健全等问题，企业、高校和科研机构、政府三方面必须相互协调，实现技术、人才、资金等要素的最佳组合，以提高企业的技术创新能力和核心竞争力。

At present,problems such as indefinite subject,inexplicit division of earning,and bad judgment system,exist in this mode of cooperation. The refore,to improve the enterprise technological innovation ability and competition ability,enterprises,universities and research institutions must coordinate with one another for the best combination of talents and funds.

目前，我国这种模式存在主体地位不明显、利益分配不明确、评价体系不健全等问题，企业、高校和科研机构、政府三方面必须相互协调，实现技术、人才、资金等要素的最佳组合，以提高企业的技术创新能力和核心竞争力。

It is also important to be able to bring them all together and to give a sense of the interlocking character of the many aspects of cinema in different places and at different times.

同样重要的是，如何把这些观点组合在一起，并赋予这些在不同地点、不同时间出现的电影的众多层面以一种相互交织的意义。

The system is the combination or interrelation of hardware, software, people, and the operating environment.

系统是组合或硬件、软件的相互关系，人和操作环境。

In china, the research on ground stone tools focused on pre-historical stone typology, and then used the conclusion to study the communication and the influence between different cultural communities. The research on technology and function of the ground stone tools still is in the preliminary stages. Some issues, such as lithic resource, theories and the methods have not been set up.

我国关于磨制石器的研究，主要集中于史前石器类型学上的考察，进而研究文化群之间的相互影响与交流；关于制作工艺、工具用途等研究尚处于起步阶段，产地研究等还是空白，理论和方法尚未建立；学者多注重个案并非石器组合的研究。

Firstly, pattern. We chose eastern mess kit and western mess kit as a combination., the orderly layout of which over the porcelain plate decorated with olive branch stands for the friendly communication of eastern and western culture—profound amalgamation and mutual advancement; on the other hand, it also represents the harmonic development of eastern and western politics and economics.

首先，就图案来讲，我们选定了东方的餐具和西方的餐具进行组合，把它有秩序的放在以橄榄枝为装饰的瓷盘上面，可以说它代表着东西方文化的友好交流，深刻融合与相互促进；也可以说它代表着东西方政治经济的和谐发展。

The two elements of a lower pair have theoretical surface with one another,while the two elementsof a higher pair have theoretical point or line contact.

低副的两个元素有相互间的理论接触面，高副的两个元素则有理论点或线接触。运动链一个运动链是环节和节点的组合。

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。