非主要的

Using properties of zero-divisors, regular elements and subdirectly irreducible ring , we obtain some results on the commutativity of semi-prime ring and Jacobson semi-simple ring as follows 1 Let R be a semi-prime ring ,a∈R and 2a is not zero-divisor,If R satisfies one of the conditions in this paper , then R is commutative.

在某些特殊环的交换性方面取得了进一步的结果，并得到了一些新的结论，主要有一设R 为半质环，a∈R ，且2a 为非零因子，如果R 满足论文中八个条件之一，则可以证明环R 为交换环。

Except that the specifications of the single-objective real-valued quantum-inspired evolutionary algorithm are kept, the proposed algorithm has three main features to enhance the RQIEA. First, the crowed comparison operator is used to sort and select individuals in multi-objective sense. Second, the non-uniform mutation operator is applied to improve the precision for local search and to preserve the convergency for the solutions. Third, the diversity preserve operator is proposed to maintain the diversity.

该算法除保留求解单目标优化问题的实值量子演化算法的特点外，还有三个主要特征：首先，根据多目标优化特点，使用多目标密度比较算子对种群进行排序和筛选；其次，应用非均匀变异算子保持解的收敛性和提高局部搜索能力；再次，使用多样性保持算子来保持解的多样性。

The present paper studies the structure of the set of non-wandering points of a continuous map from a Graph(i.e., one-dimensional connected compact branched manifold) into itself.

本文主要研究了图(即一维紧致连通的分支流形)上连续自映射的非游荡集的结构。

Ellis Cose, a journalist, once wrote that even middle-class blacks suffer constant subtle racial slights, and that these are so distressing that they "are in the end most of what life is".

非裔记者科斯有次写道，即使是中产阶级的黑人也时常受到不明显的歧视，这几乎成了他们生活的主要内容，令人苦恼不堪。

Companies in the United States have recalled several products, including nondairy creamer and a type of candy, which are primarily sold in Asian markets, because of melamine concerns but to date the contamination here was not thought to be widespread.

因为对三聚氰胺的关注，美国公司回收几种产品，包括主要是销往亚洲市场的加非奶精和类型的糖果，但到目前为止，这里的污染没有想象中那么普遍。

Economic efficiency is measured by production function while CEA, CUA and CBA are used ...

评价配置效率的指标主要有：医疗和预防服务的比例、基本医疗和非基本医疗服务的比例、卫生总费用的流向等。

He dismisses the argument of Chris Patten, the last British governor of Hong Kong, that the divide between east and west is more a question of time lag than intrinsic cultural difference.

他驳斥了英国治下的末任香港总督彭定康的观点，彭定康认为，东西方差异主要表现在发展时间上的差异，而非内在文化差异。

I believe that is very important to work with the immaterial elements of space and I am fascinated by this research. I think that it is one of the main currents in my architecture.

我相信对空间内非材料元素的研究是非常重要的，我对这项研究十分感兴趣，并且这也是我所设计的建筑中的主要内容之一。

These results show the level of diacetyl produced in Enterobacter aerogenes UV-3 would be dependent on the nonenzymatic oxidative decarboxylation of ALA.

通过主要代谢酶的酶学性质分析，确定产气肠杆菌突变株UV-3积累丁二酮的代谢途径是由α-乙酰乳酸的非酶氧化直接生成。

In dicotyledonous and nongraminaceous plants, NAS synthesizes nicotianamine which is responsible for iron storage and transportation, and the expression of NAS gene is not induced by iron deficiency.

在双子叶和非禾本科单子叶植物中，烟酰胺的主要功能是铁离子的储藏和运输，NAS基因的表达不受缺铁胁迫诱导。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。