查询词典 pentagonal number

This study investigates the understanding situation of Middle School Students"in theterms of the following 3 dimensions: the definition of negative number, therelationship of negative number and life and the operation of rational numbers withpurpose of understanding the students"cognition of negative number"s essentialfeatures and finding the root cause which results in negative number concept"scognition difficult as well as raising teaching improvement measures.

本研究从负数的概念、负数与实际生活情境之间的联系以及有理数的运算三个纬度调查了初中生对负数概念的理解情况，目的是为了深入了解初中生对负数概念本质特征的认识，寻找引起概念认知困难的根本原因，并提出有针对性的教学改进措施。

The submodel quantitatively characterized the impact of genotypic differences on sowing date and sowing rate by tillering ability and percentage of final spikes to effective tillers, and the suitable pre-winter leaf number on main stem in relation to yield target is quantified according to the principle of determining spike number from yield level and leaf number from spike number.

其中，播前方案设计的知识模型包括产量目标，品种选择，播期确定，基本苗及播种量的计算，氮、磷、钾肥料运筹和水分管理；动态调控指标的知识模型包括适宜生育期，穗分化进程，群体茎蘖动态、叶龄动态、叶面积指数动态和干物质积累动态等生长指标动态以及有效叶面积率、高效叶面积率和粒叶比等源库指标。

With the precondition of not importing magnetic charge, we gave rules of magnetic flux quantization, and the relations between magnetic flux quantization, Principle Quantum Number , Angular Quantum Number , Magnetic Quantum Number and Spin Quantum Number were built.

在不引入磁荷的前提下，给出了磁通量子化规则，建立了磁通量子化与主量子数、角量子数、磁量子数和自旋量子数的联系。

On August 22, 1893, four hurricane were occurring simultaneously: storm number three approaching Nova Scotia, Canada; storm number four between Bermuda and the Bahamas; storm number six northeast of the Lesser Antilles; and storm number seven west of the Cape Verde Islands.

1893年8月22日，四大飓风同时呼啸而起。三号风球直逼加拿大的新斯科省，四号风球咆哮于百慕大群岛和巴哈马群岛之间，六号风球徘徊于小安的列斯群岛的东北部，七号风球则在佛得角群岛的西部登陆。

Suppose G is a finite group, then QG is a semisimple Q-algera, obviously ZG is a Z-order of QG,we denote the maximal Z-order by ?.If G is not abelian, it is not an easy thing to determine г; if G is an abelian group, then QG is isomorphic to the direct sum of a finite number of number fields, and r is the direct sum of these rings of algebraic integers of those number fields, but which elements of QG belong to r is not clear.

设G是一个有限群，那么QG是一个半单代数，ZG是QG的一个Z-序，设Γ是QG的一个极大Z-序，当G是一个非交换群时，Γ的求解是困难的问题；当G是一个交换群时，QG同构于有限多个数域的直和，Γ相应的就是各数域代数整数环的直和，但Γ具体是QG中那些元素不清楚。

Name, chemical abstract number or code number, batch number

73试验物质及对照物质之每一贮存容器均标示其名称，编号代

Taking Abstract traditional Chinese house number plate system , it is not difficult to discover that Nanjing national government absorbed a large number of elements and structures from the house number plate system in history .

纵观传统中国门牌制度，不难发现，南京国民政府时期的门牌制度大量吸收了历史上多个时期门牌制度的相关要素和结构形式，并结合新的时代条件形成了自身的特有样式和确定内涵。

The results indicated that soil bacterial number decreased significantly (P.01), and soil fungi number also decreased (P.05), but not as significant as the decrease of bacterial number. The amount of soil actinomycosis decreased (P.05) under elevated CO2 in the non-rhizosphere soil of P.

结果表明：高浓度CO2（700μmolmol^(-1)和500μmolmol^(-1)）处理对长白赤松和红松幼苗非根际土壤细菌数量具有显著的(p.01)抑制作用，对真菌数量亦有抑制作用。

In addition each record has a field for phone number, fax number, cell phone number, e-mail address, web site and there is even a field for notes that can store information such as clothes sizes, favorite colors, etc. you name it.

此外每个记录有外地的手机号码，传真号码，手机号码，电子邮件地址，网站，甚至还有一个外地的债券是可以储存的资料，例如衣服尺寸，喜欢的颜色等，你的名字。

In this master thesis, we mainly discuss the adjacent vertex- distinguishing total chromatic numbers of some special graphs and prove that Zhang"s conjecture holds for these graphs. Then we get the adjacent vertex-distinguishing total chromatic numbers of the Halin Graphs. Moreover, we investigate the Generalized Petersen Graphs, prove that some classes of positive integers can"t structure the Generalized Petersen Graphs and get the result that the adjacent vertex-distinguishing total chromatic number is 5. Finally, based on the number and the parity of circles contained by the graph, we get the adjacent vertex-distinguishing total chromatic number of two classes of graphs.

本学位论文首先主要针对几个特殊图类讨论其邻点可区别全色数，验证了其满足图的邻点可区别全色数的猜想；再证明了非轮的Halin图的邻点可区别全色数；接着研究的是广义Petersen图，讨论了不能构成广义Petersen图的几类正整数，并证明了该图的邻点可区别全色数等于5；最后，根据图所含圈的个数及其奇偶性得到了两类图的邻点可区别全色数。

It was just a normal day of school

那只是上学的普通一天

Which is a very good reference in this issue.

这是一个在这个问题上很好的参考。