问题

Optimal power flow is a very important problem in power system.

最优潮流问题是电力系统中一个重要的问题，从数学角度上讲，它是一个非线性规划问题。

Hybrid Flow Shop scheduling problem is a kind of complicated scheduling problems which involve task, resource and time.

混合流水线(Hybrid Flow Shop，简称HFS)调度问题是一类复杂的调度问题，由于调度涉及任务、资源、时间的三维性，建立HFS调度问题精确的数学模型是非常困难的。

For some cases of single machine scheduling, parallel machine scheduling and flow shop scheduling, the polynomial algorithms are given, respectively.

对单机问题、平行机问题和流水作业问题的某些情况给出了多项式算法。

In this paper, I have made some research and innovative achievement in the following aspects:(1) In order to overcome the weakness of premature convergence and the disadvantage of local seardhing ability appearing in GA, an improved genetic algorithm which combining with Heuristic algorithm is proposed and applied in the flow shop scheduling problem.

在本论文课题的研究及应用过程中，作者做了以下主要研究工作和成果：(1)鉴于遗传算法容易出现过早收敛的问题以及局部搜索能力不强的问题，提出一种结合启发式算法改进的遗传算法，并将其运用于流水车间作业调度问题的求解。

PartⅡIt analyses the main problems that exist in the northeast old industry base at present and looks back on the countermeasures against the probloms. Through the analysis and review we find that human environmentˊs fogyism is the sticking point of these problems.

第二部分，分析了目前东北老工业基地存在的主要问题，对于解决这些问题所采取的对策进行了回顾，发现人文环境滞后是东北问题的根源。

In view of the precision problem of the forging parts of train axles occurred in the course of forging on the rapid forging hydraulic press, the cause of the problem was analyzed.

针对列车车轴在快速锻造液压机上锻造时出现的锻件精度问题，分析了问题出现的原因，用图示的方法揭示出问题所在，简单明了。

The development of sciences and the development of humanities are mutually promoting, but the highspeed development and wide application of sciences result in quite a few problems, such as the impact on the issues of human health, security, moral integrity development and valueorientation, the effect upon humanities development of "digitalization" and "formulism", and the serious influence upon human existence environment of "humancentralization".

自然科学与人文科学的发展是相互促进的。但自然科学的高速发展特别是自然科学的广泛应用也带来许多问题。如人类健康的新问题、人类安全问题、人的德行发展和价值取向受到巨大冲击、"数字化"和"公式化"对人文科学发展的影响、"人类中心主义"思潮带来的对人类生存环境的严重影响等。

These are significant issues, and there are others as well – and yet I am confident that the United States and China have enough mutual trust to honestly and forthrightly exchange our concerns.

以上属于比较严重的问题，此外还有许多其它问题。但我相信，美国和中国有足够的互信来坦率地就我们所关心的问题交换意见。

These are significant issues, and there are others as well – and yet I amconfident that the United Statesand Chinahave enough mutual trust to honestly and forthrightly exchange our concerns.

以上属于比较严重的问题，此外还有许多其它问题。但我相信，美国和中国有足够的互信来坦率地就我们所关心的问题交换意见。

Unless these two problems are solved, or solved properly, our writers and artists will be ill-adapted to their environment and their tasks and will come up against a series of difficulties from without and within.

不解决这两个问题，或这两个问题解决得不适当，就会使得我们的文艺工作者和自己的环境、任务不协调，就使得我们的文艺工作者从外部从内部碰到一连串的问题。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。