查询词典 A.N.

Results show that the best value of w is 7~10% and 5~7%, i is 0.08~0.2 A/cm^2 and 0.03~0.05 A/cm^2 respectively, during the electrolysis fluorination of pyridine and tributylamine; the addition of N-butyl mercaptan into the organic mixture can stabilize electrolysis process with its mass fraction 15~20% at best; impulse current polarization work status of low load is helpful to the electrolysis process and reduces corrosion rate of anode; electrolysis temperature is suitable at 0~20℃; electrobath can use electrolyte inner circulation structure, exterior circulation structure or blending structure.

结果表明：吡啶和N-三丁胺电解氟化的最佳值w分别为7%~10%和5%~7%，i分别为0.08~0.2A/平方公分和0.03~0.05A/平方公分；有机混合物中添加N-丁基硫醇可稳定电解过程，其质量分数最佳为15%~20%；采用低负荷的脉冲电流极化工况有利电解过程，降低阳极的腐蚀速度；电解温度0~20℃为宜；电解槽可采用电解液内循环、外循环结构，或其混合结构。

A single chain protein with an apparent molecular weight of 33 kDa was purified from skin of Bombina maxima by a combination of ion exchange and gel filtration chromatography steps. N-terminal amino acid sequence determination indicated that it shares 70%, 64% and 56% identity with those of annexin Ⅱ from the African claw toad, red jungle fowl and human, respectively.

通过阴离子交换、凝胶过滤和阳离子交换层析，从大蹼铃蟾皮肤中纯化到一个表观分子量为33kDa的单链蛋白。N-末端序列比较分析显示，该蛋白与来自非洲爪蟾、红色原鸡和人膜联蛋白Ⅱ的N-末端序列相同的氨基酸分别占70％、64％和56％。

The straight line log N=1.5 matches the upper envelope of the lower limits corresponding to a minimum S/N = 200 in a typical solar twin.

图中直线log N=1.5代表最小信噪比为200的类太阳恒星中Li含量对数的上限。

If a unit repeats n times along the helix there will be a meridional reflexion on the nth layer line.

如果一个单位重复n次沿螺旋会有经反射层的n次方线。

In [3], we have that let G be a graph of order n ≥ 3 such that σ_2 ≥ [4n/3] - 1, then every vertex of G is contained in a 3-cycle.

在[3]中，有如下定理：设G是一个n阶图，n≥3且σ_2≥[4n/3]-1，那么G中的每个点都含在一个3圈中。

A discrete weighted Hardy inequality is studied, and by proving a refinement lemma, the characterization of the weight sequence ｛ω_｝_(n≥1) in order that the weighted l~-Hardy inequality holds for all nonnegative and nonincreasing sequence c_ is given.

本文研究离散的加权Hardy不等式，通过建立权序列的加细引理，给出了对任何非负非增数列 lp-加权Hardy不等式成立时权序列{ωn}n≥1的特征刻划。

They are presented in need of special curves and surfaces in engineering applications. In order to prove that the uniform C-B-spline basis is normalized totally positive, we compute the matrix which transforms the C-Bézier basis into the uniform C-B-spline and decompose this matrix into a product of. bidiagonal and stochastic factors. Furthermore, we give a normalized B-basis by inserting knots.

本文用递推的方法，计算出代数三角空间中的n次C-Bézier基与n次均匀C-B-spline基之间的转换矩阵，并把该矩阵分解为一系列二对角阵的乘积，从而证明出n次均匀C-B-spline基是一个标准全正基，进一步用插入节点的方法，把它扩充为一组标准B基，从而我们可以利用B基的很多优良性质，在工程应用中对这两组基进行开发利用。

N \nSLPE has built a strong reputation in the Pacific Rim for more than a decade. We hope to share with customers about our technology, resources and one-up strength.

n \n在过去的10年中，我们在亚太地区客户中建立了良好的声誉，我们愿意将我们拥有的技术、资源和领先的力量与客户分享。

We first characterize the groups in which all m∈cdq〓 contain at most 4 prime divisors; and then show the following: if any m∈cdq〓 is nth-power-free then the derived length of solvable group G is bounded by a function f depended only on n; also if cdq〓 has k different p-parts then the p-length of solvable group G is bounded by a function g depended only on k.

首先研究了非线性不可约特征标对应的特征标次数的商至多含有4个素因子的有限群结构。其次，我们证明：若每m∈cdq〓是n次方自由的，则有限可解群G的的导长及p-长都被仅依赖于n的函数所界定；若cdq〓中共有k个两两不同的p-部分，则有限可解群G的p-长能被仅依赖于k的函数所界定。

A new sign pattern K with 2n nonzero entries is given. It is proved that n×n (n≥6) sign pattern K is a minimal spectrally arbitrary pattern by using the Nilpotent-Jacobian method.

本文给出了一个新的含有2n个非零元的符号模式K，运用Nilpotent-Jacobian方法证明了n阶(n≥6)符号模式K是极小谱任意模式。

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