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A real number can be convergent by a set of rational number.

一个实数可以看成是一系列的有理数集合。

A real number is said to be a rational number if it can be expressed as the ratio of two integers, where the denominator is not zero.

这是定义数学术语的一种形式。下面是另一种定义数学术语的形式。

The first fraction is the smallest rational number in the range, and the second fraction is the largest rational number in the range.

第一个分数是该区域中最小的有理数，第二个分数是该区域中最大的有理数。

Can you think of a way to work out the equation with a solution by contacting the expansion process from the natural number system to the real number system?

方程 x 2＋1=0在实数集中无解，联系从自然数系到实数系的扩充过程，你能设想一种方法，使这个方程有解吗？

Fuzzy number valued mapping of real number variable is studied.

研究实变量模糊数值的映射。

This paper utilizes the Reciprocal Law Two Times to prove that the rational number of a kind of form is not the integer, and proves that the number of another kind of prime is limitless.

摘要利用二次互反定律证明了某类形式的有理数不是整数，并且证明了某类形式的素数的个数是无限的。

This paper utilizes the Reciprocal Law Two Times to prove that the rational number of a kind of form is not the integer ,and proves that the number of another kind of prime is limitless.

利用二次互反定律证明了某类形式的有理数不是整数，并且证明了某类形式的素数的个数是无限的。

Recognizer. If we have detected a number, we return the unique value NUMBER

Scan函数的结果被存取在全局变量中—-这简化了识别器的工作。

Based on the experiments, the relations between the Nusslt number Nu, and Reynolds number Rc are obtained by wall-temperature method, and it is analysised that the economy and the manufacturing method of a helical recuperator.

本文在较大的迪恩准数范围内用壁温法研究了螺旋回热器的传热性能，得到了其传热性能关系式，并分析了螺旋回热器的制造方法及其经济性能。

The author studied the formula of the sum of natural number power, and got a recurrence formula of the coefficient about the sum of natural number′s power, it was better than the other formulas that had been obtained.

研究了自然数方幂和的表示公式，给出了其系数的一个递推关系式，利用递推公式很容易得到幂和的各项系数，为计算机解题提供了依据。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。