This paper discusses the relation beween order classification and isomorphic classification, gives some important characteristic properties of a cyclic group with order n and a important property of a p-group with finite order, introduces two factorization method of direct product for commutative p-group with finite order, presents some new problems.
讨论了阶分类与同构分类的关系,给出了n阶循环群的几个重要的特征性质和有限p-群的一个重要性质,介绍了有限交换p-群直积分解的两种方法,提出了一些新的问题。
The N cycle of rubber tea chicken eco agricultural model,a typical tropical agro forestry system in Wenchang municipality of Hainan province,was studied with quantitative experiment and qualitative analysis,compared with rubber and rubeer tea systems.
以海南省文昌市典型的胶 茶 鸡农林复合系统模式为研究对象 ,以单作胶园、胶茶间作园为对照 ,采用定量研究与定性分析相结合的方法 ,研究其N循环规律 。
So "the primary studies on nitrogen and phosphorus cycling and pollutant refining in the Yangtze Es.
长江口滨海湿地是我国重要的河口型湿地，生物多样性丰富，是天然的基因库，是高生产力的生态系统，但正遭受污水排放、围垦造地等人类行为的影响，三峡工程、南水北调工程的完成也将影响到长江口滨海湿地的正常功能，因此“长江口滨海湿地N、P循环及污染净化初步研究”具有重要的现实意义。
Local n-cocycles of Abelian von Neumann Algebras
交换von Neumann代数的局部n-上循环
Local n-cocycles of Abelian von Neumann Algebras
交换von Neumann代数的局部n-上循环
Cyclic Codes over F_2+uF_2 of Length 2n
环F_2+uF_2上长度为2n(n为奇数)的循环码
On Cyclic Voltammetry Behavior of N-Methylaniline at Different Electrodes;
N-甲基苯胺在不同电极材料上的循环伏安行为
Hypercyclic Operator in C_0(N) and C_0(Z) Space;
空间C_0（N）和C_0（Z）中超循环算子
Necessary Conditions for the Existence of Cyclic(3,1)-GDD(g~n)
循环(3,1)-GDD(g~n)存在的必要条件
A discussion on the constitution of an Abel group by the collection of n step cyclic matrix
关于n阶循环矩阵成Abel群的讨论
Calculation for nth Order r-Recurrent Determinant and Its Application
n阶r-循环行列式的计算及其应用
Changes of Concentration of 20 Peptide at Proadrenomedullin N Terminal in Coronary Heart Disease Patients and Its Changes in Coronary Circulation;
冠心病患者肾上腺髓质素前体N端20肽浓度及在冠脉循环中的变化
Research on Cyclic Code and Constacyclic Code over Ring F_2+uF_2;
环F_2+uF_2上的循环码和常循环码的研究
Cyclic Cycle Decompositions of the Complete Bipartite Graph K_(n, n) and the Edge-Balance Index Sets
完全二部图K_（n，n）的循环圈分解及边—平衡指数集
Nutritional Cycling and Transformation Processes of Carbon and Nitrogen in Rice Cropping System of Red Soil Region of China;
红壤稻田系统养分循环与C、N转化过程
Study on Scale Inhibitory and Dispersing Agents in Seawater of High Cycles of Concentration (N≥2.0);
海水高浓缩倍数（N≥2.0）循环冷却阻垢分散剂研究
Some Results on the Independence Number of Circulant Graphs C(n;{1,k})
有关循环图C(n;{1,k})的独立数的一些结果(英文)
Catalytic Synthesis of N, N-dimethylcyclohexanamine over HX Zeolite;
HX分子筛上催化合成N，N-二甲基环己胺
The Binary Image of K-Cyclic Code, Cyclic Code and Quasi-Cyclic Code over Z_4;
环Z_4上的K-循环码，循环码和准循环码的二进制像
Research on Nitrogen Recycle and Its Effect on Environment in Dry-Land of Loess Plateau;
黄土高原旱地农田生态系统N素循环及其环境效应研究
(1+u~k) constacyclic codes over F_2+uF_2+…+u~kF_2
环F_2+uF_2+…+u~kF_2上的循环码和(1+u~k)循环码
Annual and Semi-Annual Cycles of the Upper Thermal Structure in the South China Sea
南海上层海洋热结构的年循环与半年循环