查询词典 A.N.

Since any n×n doubly stochastic circulant matrix has a unique representation as a polynomial of degree n-1 in the shift operatorω_n,the classification problem of primes in the doubly stochastic circulant matrices can be reduced to the solution of an equation over a doubly stochastic circulant matrix.

由于任一n阶双随机循环矩阵都可以唯一地表示为移位的n-1次一元多项式，从而可把双随机循环矩阵中素元的分类问题简化为解双随机循环矩阵上的一个方程。

Let n ≥ 4 be a fixed integer, R be a unital commutative ring of characteristic not 2, and D_n be a D_n-type classical Lie algebra over R.

假设n是一个大于等于4的整数，R是特征非2的有单位元的交换环，D_n是环R上的D_n型李代数，N是D_n的一个极大幂零子代数。

A necessary and sufficient condition is proved here for judging whetherthe ideal class group Hof a quadratic function field 〓has a cyclicsubgroup of order n for any given n.

给出了一般二次函数域的理想类群含有n阶循环子群的充分必要条件（其中〓是任意事先给定的正整数）。

If ris also irreducible in Z_nand f~n~κ≡fmodn,r(xfor all f∈Z_nthen we call n a Carmichael number of orderκmodulo r.Denote the set of all such numbers by C_κ,r(x.Define C_κ=∪_r(xC_κ,r(x,where rpasses through all monic irreducible polynomials over Z of degreeκ.We call elements of the set C_κCarmichael numbers of orderκ.ZHU and SUN[Journal of Sichuan University,42;1(2005), 47-51]first gave a necessary condition for Carmichael numbers of order 3.Then they gave a sufficient condition for Carmichael numbers of order 3,but did not find any such numbers less than 10~8 satisfying the sufficient condition.At last,they asked three questions;1.is the necessary condition also sufficient?

f∈Z_n，就称n是模r的κ阶Carmichael数，用C_κ，r(x表示所有这种数的集合，定义C_κ=∪_r(xC_κ，r(x，这里r跑遍Z中所有κ次首一不可约多项式，C_κ里面的元素就称为κ阶Carmichael数，C_κ称为κ阶Carmichael数集，朱文余和孙琦[四川大学学报，42；1(2005)，47-51]首先给出了3阶Carmichael数的一个必要条件；然后又给出了这种数的一个充分条件，并发现10~8内没有满足此充分条件的这种数；最后他们提出三个问题；一、问必要条件是否也是充分的？

In Chapter 3, we discuss the self-adjoint boundary-value problems for products of m differential operators generated by the same symmetric differential expression of order n defined on a, b

第三章 讨论了m个由同一n阶对称微分算式生成的赋予某种边界条件的微分算子乘积自伴边值问题，结合常微分算子自伴扩张的一般构造理论，分别给出了两个四阶微分算子、两个n阶微分算子、m个n阶微分算子乘积自伴边条件的解析刻划，得到了乘积微分算子是自伴的充分必要条件及与乘积算子自伴性有关的一些有益结果。

The changes of total branch length, expending rate of root and ball root rate decline with the increase of N clement, which shows that after using N ,the root tuber of Juema lies not a commercial value.

蕨麻总分枝长、根系膨大率、球根率则随N素水平的增加而直线下降，表明施用N素后蕨麻块根不具有商品价值。

Both n/n and aromaticity of the feed can well reveal the coking tendency of a feed.

原料的n/n和芳碳率均能够较好地反映出原料的结焦性能。

I always plant flatter "customer first, quality first" principle a n d to the high quality products, reasonable price, sincere attitude dedicated to customer service a n d would like to thank you f o r giving us a chance to introduce, a n d sincerely hope that Get your supp o r t.

我公司一贯奉承&客户至上，质量第一&的原则，以优质的产品，合理的价格，诚恳的态度竭诚为各位客户服务，在此真诚的感谢并希望能得到您的支持，天之骄----打造包装行业新的骄傲，我们为您考虑得更多！

METHODS: Eighty cases who had undergone renal transplantation were randomly divided into 2 groups:① preemptive therapy group (n=40), who were given ganciclovir (GCV, 250 mg/d) once at least 1 CMVPP65 positive cell per 2.0×105 PBL till the antigenemia became negative.② Control group (n=40), who were given universal twoweekprophylaxis with GCV (250 mg/d) beginning at the 3rd week after transplantation. A 3month followup was conducted and the efficacy and costeffectiveness of the 2 groups were compared.

将尸肾移植后患者80例分为两组：①早期治疗组（n=40），即在术后若监测到CMVPP65抗原血症阳性，则给予更昔洛韦（250 mg/d）治疗，直至抗原血症转阴；②对照组（n=40），所有患者从移植后第3周开始均给予更昔洛韦（250 mg/ d）治疗，持续2 wk，随访时间3 mo，观察两组对CMV疾病的预防效果。

N The Zeebrugge investment was the first step in pursuing the goal – set for the company by the Shanghai municipal government, which owns 70 per cent of SIPG – of turning itself into a big international terminal operator.

n \n \n拥有上港集团70%股份的上海市政府为其制定的目标是，将该集团转变为一家大型的国际性港口运营商，而泽布吕赫港的投资是实现这一目标的第一步。

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