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By using Critical Path Method of network planning technique as the tool,this paper studied the properties of float.Based on the above properties,the super-large type project network is simplified as an equivalent simple network,making the incomputable and complex problem a computable and easy one.What is particular is that the work load of computation of the simplified network is largely reduced whatever agrithorm is used.

本论文用关键路线法(Critical Path Method,简称为CPM)网络计划技术作为工具,在机动时间特性研究的基础上,把超大型工序网络化简为等效的简单网络,从而使不可计算的问题转化为可计算的问题,使很复杂的问题转化为比较简单的问题,尤其是利用化简后的网络求解时间-费用权衡问题,无论使用任何一种算法其计算量都会大大减小。

The word algebra comes from the title of a Persian mathematician's famous 9th century treatise "Kitab al-Jabr Wa l-Mugabala" which translates roughly as "The Book of Reasoning and Balancing."

代数这个词最初来源于一位波斯数学家在9世纪发表的一篇论文的题目,大约可以翻译成&推理和权衡&。

Trade-Off: Why Some Things Catch On, and Others Don't by Kevin Maney (Broadway, 2009, hardcover, 217 pages,$15.64 on Amazon.com) explores why some ideas succeed and others fail.

权衡:为什麼有些东西流行起来,而有的则没有被凯文曼尼(百老汇,2009年,精装,217页,十五点六四美元在Amazon.com)探讨为什麼一些想法成功,另一些则不能。

Trade-Off: Why Some Things Catch On, and Others Don't by Kevin Maney (Broadway, 2009, hardcover, 217 pages,$15.64 on Amazon.com) explores why some ideas succeed and others fail.

权衡:为什么有些东西流行起来,而另一些由凯文曼尼(百老汇,2009年,精装,217页,在Amazon.com $ 15.64)不探讨为什么一些想法成功,另一些则不能。

According to the character of condensate gas and the injected dry gas inside the UGS based on condensate gas reservoirs, the paper puts forward a mathematical model of multicycle working inventory for constant volume and weak waterbearing condensate gas reservoir by the mixed fluid density calculation method with molar volume balance and the gas equation of state.

为此,针对凝析气藏型地下储气库库内凝析气与注入干气混气的特点,从库存量的定义入手,利用摩尔体积权衡混合流体密度计算方法和气体状态方程,提出了定容和弱边底水凝析气藏型地下储气库多周期运行系列盘库计算的数学模型。

Nant plants in harsh environments, and there is a trade-off between their waterretention and light and nutrient resource availability.

苔藓植物常为严酷环境中的优势植物,并在保持水分和获取光及养分资源两方面存在权衡

Having weighed up the arguments on both sides, it seems there are good eco nomic and ecological reasons for sources of energy other than unclear power.

权衡核能赞成者和反对者的论据之后,从经济和生态两方面考虑,似乎有充分的理由认为应选用其他能源。

All weighing tests should be made in the standard atmosphere for testing textile.after the specimens have been conditioned in the same atmosphere.it may be impractical to condition the specimens in option A or nonconditioned testing may be agreed upon by the purchaser and supplier.when the full rolls or bolts of fabric can not be properly conditioned in a resonable time with available facilities,perform the tests without conditioning and report the actual conditions prevailing at the time of the test.such results may not correspond with the results obtained after testing adequately conditioned specimens in the standard atmosphere for testing textiles.

D1776实际操作的定向试块。纺织品的所有的权衡测试都应该在标准大气压下进行。当试块被置入同等气压的条件之后,或许将试块限制于A选项是不切实际的,而且有可能条件测试并不一定会被供应商和客户认同,当充满凹凸不平和毛刺的织物不能被适当的限制与合理的时间和现有的设施的时候,在没有限制的情况先执行试验并准确的报告在测试时的有力条件。这样得到的对纺织品测试的结果或许会与在真空中得到充分限制测试的结果不相一致。

We discuss the case when functions are nondifferentiable by using the model, it can make a tradeoff between the benefit and fairness according to the weight.

此外,该模型考虑到了效用函数不可微的情况,并且能够根据政府的偏好对社会效用和公平性进行权衡

There exits several MDO algorithms. But they are in our opinion either nonefficient or complicated. So we devised an algorithm called Subspace Approximation Optimization . In the SAO algorithm, the whole system is decomposed into one system-level optimization and several disciplinary optimizations so that a large and complicated problem can be divided into several easy-solving sub-problems. The coupling relationships and the coordination among disciplines are presented by equality constraints and these equality constraints are assigned to relevant disciplines. The optimums of design variables in system level optimization are transferred to discipline level optimization. The optimums of design variables in discipline level correspond to the point that is the nearest to the optimums of design variables in system level. If the optimums of design variables in system level are out of feasible region of discipline 1eve1, linear constraints can be built in the system level optimization using the design variable optimums obtained by the discipline level optimization. The system level optimization would improve the design of the whole system with these linear constraints.

目前,国内外已经发展出了多种飞机多学科设计优化算法,本文的重点是针对协同优化算法的不足,提出了子空间近似优化算法(Subspace ApproximatingOptimization,SAO),SAO算法中,整个系统的优化问题被分解成一个系统级优化和若干学科级优化,而各个学科之间的耦合与权衡关系则被当作等式约束,这些等式约束将被分配到各个学科级优化中去,系统级优化的任务是寻找整个系统的最优解,而学科级优化的目标函数是以系统级优化分配下来的设计点为圆心的超球半径的平方,因此,如果系统级优化分配下来的设计点在学科级优化可行域内,则学科级优化目标函数为0,反之,则学科级优化的最优点是系统级优化当前设计点距离可行域最近的点。

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On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面,更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值,分为几个相等的区间作为横轴,并将各区间内所测定值依所出现的次数累积而成的面积,用柱子排起来的图形,也叫做柱状图。

You rap, you know we are not so good at rapping, huh?

你唱吧,你也知道我们并不那么擅长说唱,对吧?