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Summary: The concept of matrix and its determinant computing, matrix determinant, matrix sub-block with the elementary transformation, invertible matrix, rank of matrix; vector and its computation, the linear relationship between vector, vector group of rank; linear equations of the nature and structure of linear equations; matrix eigenvalue and eigenvector, similar to matrix and matrix diagonalization conditions, the standard quadratic form with the normal forms, quadratic and symmetric matrix There are qualitative.

内容提要：行列式矩阵的概念及其运算，方阵的行列式，矩阵的分块与初等变换，可逆矩阵，矩阵的秩；向量及其运算，向量间的线性关系，向量组的秩；线性方程组的性质与结构，线性方程组的求解；矩阵的特征值与特征向量，相似矩阵与矩阵可对角化条件，二次型的标准形与规范形，二次型和对称阵的有定性。

Hainan's most popular season is of course Spring Festival when legions of mainlanders shuddering from sub-zero winter temperatures spend Chinese New Year on the invitingly temperate beaches of the tropical island.

当大部分的大陆人在忍受着零下几度的严寒过春节的时候，我们却可以在温和的气候中在热带海岛上过新年。

Hainan's most popular season is, of course, Spring Festival, when legions of mainlanders shuddering from sub-zero winter temperatures spend Chinese New Year on the invitingly temperate beaches of the tropica island.

说到海南最受欢迎的季节，当然是春节咯。当大部分的大陆人在忍受着零下几度的严寒过春节的时候，我们却可以在温和的气候中在热带海岛上过新年。

Hainans most popular season is, of course, Spring Festival, when legions of mainlanders shuddering from sub-zero winter temperatures spend Chinese New Year on the invitingly temperate beaches of the tropica island.

说到海南最受欢迎的季节，当然是春节咯。当大部分的大陆人在忍受着零下几度的严寒过春节的时候，我们却可以在温和的气候中在热带海岛上过新年。

By analyzing the grounds of this viewpoint, this paper holds that intention is still the inevitable element of actus reus in the criminal law and that intention is different from deliberation and involuntariness which form the sub- jective ingredients of crime in that the former indicates the attitudes of the action - doer has towards the act...

本文对该观点所依据的几点理由进行了分析，认为有意性仍然是刑法中危害行为的必然要素，并将刑法中危害行为的有意性与作为犯罪构成主观要件的故意与过失区别开来，认为危害行为的有意性是指行为人对其行为本身所持有的心理态度，而作为犯罪构成主观要件的故意与过失是指行为人对其行为引起的危害结果所持有的心理态度，二者在内容、性质、功能以及法律后果等四方面存有显著的区别。此外，本文还对二者在司法实践中的表现形式进行了归纳分类。

Research results: The proposals are offered that for ballastless track it should be given priority to lay open latch impressed rail with iron tie plate and spring having bolt, to equip with iron tie plate and single layer or double layers elastic bedding, and to equip with no bed retaining fastenings for sub -rail foundation.

研究结果：提出了无碴轨道宜优先采用带铁垫板的分开式、弹条有螺栓扣压钢轨和铁垫板、单层或双层弹性垫层、轨下基础不设挡肩扣件的建议。

In order to solve these problems, this paper combines control technology and transducer technology to research constant pressure water supply system. Two independent sub-systems are irrespectively built with water place sensor and pressure sensor.

为了解决这些问题，本文采用控制技术和变频调速技术相结合的方法来研究恒压供水系统，该系统与现场液位传感器、压力传感器一起组成了两个独立的闭环控制子系统。

Two independent sub-systems are irrespectively built with water place sensor and pressure sensor.

为了解决以上这些问题，本系统采用控制技术和变频调速技术相结合的方法来研究恒压供水系统，该系统与现场液位传感器、压力传感器一起组成了两个独立的闭环控制子系统。

Hanging outside the window air-conditioning heat sink and the house looks up isolated, in the past set in a box above the board on it run its course, put in the wood with a stainless steel flower bowl, decorating mud pressure on the sub-plate, which also need a small cactus in our care - in fact we have not been any thought of her enough to spend on when she and we as irrelevant.

挂在窗子外面的空调散热器也显得和这个家隔离了起来，以前套在机箱上面的一块遮风挡雨的木板就让它自生自灭了，搁在木板上面有一个不锈钢花钵，就装点泥沙压压板子，里面小小的的仙人球也无需我们照顾—其实我们也一直没有对她花费任何心思和气力，就当她和我们不相干一样。

Isopiestic measurements have been carried out at 298.15K for the quaternary aqueous solution H2O+KCl+NaCl+NH4Cl saturated with potassium chloride and its ternary sub-systems H2O+KCl+NaCl and H2O+KCl+NH4Cl.

在298.15K条件下采用等压实验方法对KCl饱和的四元水溶液体系H2O+KCl+NaCl+NH4Cl及其两个三元亚系H2O+KCl+NaCl和H2O+KCl+NH4Cl进行了研究。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。