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Nonetheless, they do suggest that good quality solutions: can be obtained with minimal search :of the solution space using the procedure and that performance of the algorithm is probably sensitive to the specification of crossover parameters.

不过,他们建议,良好的质量解决方案:可以用最少的搜索得到:该解决方案的空间利用的程序和算法的性能可能是交叉敏感的参数规格。

The practical problem of the arbitrary plane angle (the edge of the angle is the line at arbitrary position) in space and its projective angle is analyzed and studied in this paper.

本文对空间任意平面角(角边可为任意位置的直线)及其投影角这一具有实用性的几何问题进行分析研究;用几种不同的解析方法得出在各种情况下的关系式,从而能以最少的参变量,进行准确而简便的计算。

Germany's generous solar subsidies covered the roofs of one of the world's most sunless countries with solar cells, thus pushing up the price of silicon and reducing the cost-effectiveness of solar power in countries where it actually makes sense.

德国对太阳能的慷慨补贴使那些世界上光照最少的国家的房顶上都装上了太阳能电板,于是乎硅的价格被抬高,太阳能的成本效益在那些确实需要它的国家里又被降低。

The destructive effects of an unrestrained and unreflected civilization on the coexistence of nations, on the interrelations between society and nature, and not least on individual people are obvious.

一未克制的和未经思考的文明的有关在个人人们上社会和本质和不最少的之间相互关系有破坏性的对共处的国家的影响是显而易见。

At present, OTA circuit is designed the best circuit with minimum error generally acknowledgedly, and possessed three following advantages at the same time: using single-ended-input OTAs (overcoming the feed-through effect due to the use of differential-input OTAs), using grouded capacitors (absorbing the shunt parasitic capacitance), and using the minimum components and all the parasitic capacitances have the same places as those of all the given capacitors in the realized circuits.

目前为止,OTA电路是被公认设计最佳且误差最小的电路,且同时具备了以下三项优点:(1)使用单端输入的OTA(可免除寄生电容的Feed-through效应),(2)使用接地电容,(3)使用最少的主动元件,且所有外加电容位置恰好与所有寄生电容的位置相同,吸收了寄生电容,并减少寄生效应对整体电路的影响。

Because we can't control the disaster source in some years of the future, we can only decrease the losses through diminishing the vulnerability of the disaster affected bodies. But the vulnerability can't be diminished illimitably because of the limit of some condition, like fund. So, we must research how to get the largest safeguard through the fewest investment. The base of this kind of study is risk assessment.

在未来若干年中,人类还不可能控制灾害源和灾害载体,只能通过减少承灾体的易损性来减轻水灾对人类生命财产构成的威胁,但由于资金等条件的限制,人类又不可能无止境地减少易损性,这就必须探索怎样能以最少的投入获得最大的安全保障,这些工作的基础就是风险评估。

The present dissertation reviews the total synthesis of biotin, particularly on Hoffmann-La Roche\'s Lactone-Thiolactone approach. The Lactone-Thiolactone approach is presently the most competitive commercial route, which gives an excellent illustration of the gradual construction of the functionalized skeleton with the simultaneous solution of the stereochemical issues in a minimal number of steps.In 1970, Gerecke etc. of Roche Corp.

论文对生物素全合成的文献进行了综述,重点讨论了目前工业上最有竞争力的内酯—硫代内酯路线,展示了生物素是如何以最少的步骤去逐步构建目标产物的官能团骨架并同时解决立体化学问题的。1970年,Roche公司的Gerecke等报道了一条通过手性内酯,以较高收率并保持构型得到手性硫代内酯,从而直接合成d-生物素的方法后,该中间体内酯(3aS,6aR)-1,3-二苄基。

They say it cuts the smoke and dangerous gases by up to 80 percent, compared to open fires or simple traditional stoves. The cook stove was designed to produce the greatest demounted amount of hit heat in the shortest demounted amount of time and with the least amount of fero fuel .

他们说这种炉灶能够减少的烟雾和危险的煤气,相对与明火和简单的传统炉灶提高了80%这种炉灶的设计原理是在最短的时间和使用最少的燃料来产生最旺的火。

In some areas, very low-cost manual heads can be employed in roughs that require a minimum of supplemental watering to survive dry periods. This is particularly true when the roughs are planted to water-efficient turfgrasses.

一些地方的高草区应用了价格低廉的手动喷头,尤其是高草区种植的是节水型的草坪草时,因为高草区只要求最少的水分补给来度过干旱的季节。

Shortly before the voyage was over, he mulled over what he had seen on the Galápagos:"When I see these islands in sight of each other, and possessed of but a scanty stock of animals, tenanted by these birds, but slightly differing in structure and filling the same place in Nature, I must suspect they are only varieties … If there is the slightest foundation for these remarks the zoology of the will be well worth examining; for such facts would undermine the stability of Species."

在这次航行结束前不久,他仔细思考了在加拉帕戈斯群岛上看到景象:&那些岛屿相互毗邻,彼此可以看见,仅仅拥有少量的动物,栖息着一些结构略微不同并且在自然界中存在于相同的地方的鸟类,当我看到这些岛屿时,不由得猜想这些鸟类仅仅是一些变种……。即使这些观察有最少的基础,加拉帕戈斯群岛的生物学也将是完全值得考察的,因为这些事实将摧毁物种稳定的观念。&

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It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发,分析对称连杆曲线上鲍尔点的产生条件,提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品,年生产总值3000万美元,产品价廉物美、选料上乘、质量保证,深受国内外客户的青睐

The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.

血精的原因很,以良性病变为主。