二分

Propylene is one of the important chemical industry material , a half of its produce outputs are used to make chemical industry products in America , then the reaction's product between the rest and isobutane is alkane chemical compound demanded in petroleum .

丙烯是重要的化工原料，美国将生产量的二分之一用于制造化工产品，余下的大部分则与异丁烷反应制造汽油中所需要的烷化物。

In this paper, firstly, not only the incidence matrix ,adjacent matrix, cycle matrix, cut-set matrix of an undirected graph are summarized, but also the close contact between a graph and its corresponding matrix are discussed ; secondly, many problems of a graph which are solved by analysing its matrix are listed as follows:1、The co-tree set of a graph is obtained by using its cycle-matrix ; 2、The branches of its spanning tree are given by using its cut-set matrix ; 3、By making use of the incidence matrix of a graph ,not only its vertex cut 、cut vertex 、isolated point and spanning tree can be obtained ,but also the two sides which are whether parallel or not can be judged ;4、By using their adjacent matrix ,the two graphes which are whether isomorphous or not can be judged; once more, there is a detailed introduction in view of special graph (for example: bigaritite graph ,regular graph and so on);last but not least, a graph method of calculating the N power of a matrix is given and the practical applications of the theorem for degree is indicated.

本文首先综述了无向图的关联矩阵，邻接矩阵，圈矩阵，割集矩阵以及图和它对应矩阵之间的关系；其次总结出了利用上述各类矩阵可以解决的图的若干问题：1、利用图的圈矩阵可以求其连枝集；2、利用图的割集矩阵可以求其生成树的树枝；3、利用图的关联矩阵不仅可以求其割点、点割集、连通度、孤立点和生成树，而且可以判断两条边是否平行；4、利用图的邻接矩阵可以判断两个图是否同构；再次，针对特殊图（例如：二分图、正则图等等）的邻接矩阵作了详细介绍；最后，得到了利用图计算矩阵的N次幂的方法，指出度数定理的实际应用。

Have you ever wondered what you would get if you crossed a jet airplane with a helicopter?

本书每页约80个单词，插图占全书二分之一）如果喷气式飞机与直升机二者合一会是一种什么样的情形呢？

For the purpose of avoiding vexatious litigation, the parties are sometimes deterred by pecuniary penalties, and sometimes by an oath which is imposed by the Pr?tor. In certain cases an action for double damages is brought against a defendant; for instance, in the collection of a judgment debt, or for money expended for a principal, or for unlawful damage to property, or where proceedings are instituted to collect legacies left by condemnation. In some instances, the deposit of a forfeit is permitted to be made, for example, in an action

对于持否认态度地人，在某些情况下规定了双倍诉讼，比如，当因已决案、已清偿物、非法损害或者间接遗赠等问题而被诉时，在某些情况下，允许作出承诺，比如：当因借贷确定数额的钱款或者关于钱款的债务协议而被诉时；然而，在借贷确定数额的钱款的情况下，罚金未三分之一，在关于钱款的债务协议的情况，为二分之一。

However, when the skew between input data and the input clock is close to half step time, the "three times oversampling" system can not detect whether the skew leads or lags, and may induce errors in recovered data.

当输入资料偏移量接近二分之一步距时，三倍取样架构将无法分辨出偏移量是领先还是落后取样时脉，因此可能造成恢复资料的出错。

In this system,arc length of the curve between two points is calculated by Simpson method,and then observer's position and orientation at every frame are deduced by bisection.

通过Simpson法计算两点之间曲线弧长，二分法迭代得到观察者每一帧时所处的视点和视角。

A linear search was taking forever, so a binary search was needed.

一个线性查找永远是吸引人的。所以一个二分查找是需要的。

In the proposed algorithm, we make use of the Lipschitz condition to determine lower bounds of functions over each rectangle.

在算法中，我们运用Lipschitz条件来确定目标函数和约束函数的在每个n-矩形上的上下界，对于n-矩形的分割，我们采用选择珩矩形最长边的二分法，同时我们采用了一些矩形删除技术，在不大幅增加计算量的前提下，起到了加速算法收敛的效果。

In this paper, using qualitative analysis and quantitative analysis method, according to passenger O D flows and taking convenience of passenger travel for the objective, we give mathematics model of maximum matching of weighted bigarph to describe passenger train plan , and acquire an optimum solution of the problem by computer.

采用定量和定性分析相结合的办法，根据路网上旅客 O- D流量，以方便旅客旅行为目标，将直通旅客列车开行方案的确定，归结为二分图的最大权匹配问题，通过计算得到一个优化的初始方案。

The results show that the effective thermal conductivity of Si/Si0.9Ge0.1 superlattice nanowire is reduced by a factor of 3 or 2 by correcting phonon mean free path.

本文研究发现利用本文修正后的声子平均自由径，超晶格奈米线的等效热传导系数降低了约三分之一到二分之一左右。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。