借助矩阵的合同变换法，给出了化实二次型为标准形的方法、求标准正交基的方法，并给出了正定二次型判定定理的新证明。
By means of congruent transformation in matrix, the method of transforming real quadratic form into standard form and the method of normal orthogonal basis are given in this paper.
跳槽经历，可能只是几个合同制工作的变换，但是没有加以解释。
Job hopping, which could be contract positions but it's not explained.
二次型化标准形常采用配方法，而二次型化标准形等价于它的矩阵合同对角化，文中利用初等矩阵和初等变换之间的关系。
Method of completing square is often used when transforming a quadratic form into a normal one, whose process is equivalent to making the relevant matrix contract diagonal.
主要介绍了雷达模拟器的结构与功能，并阐述利用数学方法产生的伪随机分布函数，主要生成方法有混合同余法、逆变换法、函数变换法和拒绝-接收法，并进行举例说明。
The main generation methods consist of mixed congruence method, inverse transform method, function transform method and refuse-accept method, which are illustrated by means of giving several examples.
主要介绍了雷达模拟器的结构与功能，并阐述利用数学方法产生的伪随机分布函数，主要生成方法有混合同余法、逆变换法、函数变换法和拒绝-接收法，并进行举例说明。
The main generation methods consist of mixed congruence method, inverse transform method, function transform method and refuse-accept method, which are illustrated by means of giving several examples.
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