影响多中心的

Social accounting matrix is a kind of national accounts represented by a square matrix which reflects all kinds of relations among the social agents. However, the SAM is generally constructed on the basis of the system of national accounts published in 1993, so it doesn't illuminate the contribution of resource and environment to economic growth and vice versa.

摘要社会核算矩阵是"以正方形矩阵表示的国民经济核算账户，它反映了一定时期内社会经济主体间的各种联系"，但目前的社会核算矩阵的编制多参照93年国民经济核算体系的中心框架，没有体现自然资源和生态环境对经济发展的贡献以及各类活动对环境的影响等等。

"Quality serice in an emergency setting may require multiple systems; we can take a look at policies that we can implement, timely reporting, discrepancy handling, and look to find ways to capture emergency physician related to imaging," said Christopher Toland, who is from the Uniersity of Maryland Medical Center in Baltimore, and presented the group's research.

前Baltimore的Maryland大学医学中心工作人员，Christopher Toland先生在其发言中指出："急诊环境中进行质量控制需要多个系统的协调工作，我们可以回顾一下我们可以采用的政策，包括影响报告，不一致意见的处理，寻找合适的方式的方式与涉及读片的急诊大夫保持联系等。"

With the organizing style and strategies becoming more Jacobinical, NEA gathers the resources admired by all other teacher union, and changes into a teacher union having the maximum members and biggest economic power in America. Before the 1960s, AFT had no power to organize the action of the teachers in the whole country. But after then, AFT enormously had succeeded in competition with NEA, and it had great impact on the drafting and implement of all kinds of the educational policies in the urban area.

随着全美教育协会组织风格和组织策略的日益激进，协会集聚了令所有其它美国教师组织羡慕的资源，全美教育协会成为美国会员人数最多、经济实力最强大的教师组织。20世纪60年代以前，美国教师联盟还没有组织全国教师开展活动的能力，但是在此以后，在与全美教育协会的竞争中获得了重大胜利后，美国教师联盟对城市中心地区的各种教育政策的制定与实施发挥了很大的影响作用。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐