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The inverse method was used in aerofoil of fan blade design, a nonlinear algorithm of velocity distribution optimization, different optimize methods was introduced ,according to the difference of suction and pressure surface, this technique can adjust the thickness of aerofoil available.

使用反方法进行风机叶片的翼型设计,采用了一种非线性优化速度分布的方法,分别针对吸、压力面的初始速度分布采用不同的优化手段,可以有效地调节翼型的厚度。

The snow and ice albedo plays a key role in the energy balance between the earth and atmosphere.

冰雪反照率在地气能量平衡中起重要作用,其大小取决于两个方面,即冰雪面的反射属性以及大气或天空的状况。

Intermediate image of three-mirror anastigmat having two image surfaces was between secondary and tertiary mirror. In order to fold the optical path, four-mirror anastigmat was designed by adding the spherical reflective mirror at intermediate image.

带一次中间像面的离轴三反系统的中间像位于次镜和三镜之间,为了进一步折叠光路,在中间像面处加入球面反射场镜,从而成为离轴四反。

But the author holds the idea that the fundamental reason is the liberalism departure from Chinese reality, so it is impossible to achieve great history tasks of anti-imperialism and anti-feudalism and thus make the status of half-colony and half-feudalism overthrowed, and it is inevitable for advanced Chinese to turn to Marxism.

自由主义作为一种制度设计在中国走向失败原因是多方面的,但本文认为最基本的原因是自由主义脱离了中国现实,不能帮助中国完成反帝反封的历史任务以使中国摆脱半殖民地半封建的历史地位。

Thus, it's essential to make a research on the non-market economy rules of antidumping legislation and practice of US.

原因是多方面的和复杂的,但可以肯定的说,美国反倾销法对我国的不公平的非市场经济待遇难辞其咎。

Another common trait of both vampires and the Antichrist is their banishment to the ground or earth.

吸血鬼和反基督者另外一个相同的显著特点是他们都是被放逐到地面的。

This paper proposed the method and technique of the inversion of Moho depth of China and adjacent areas according to Bouguer gravity anomaly.

提出应用布格重力异常反演中国海陆莫霍面深度的方法与技术,并考虑到中国海、陆构造的一体性,进行海陆统一编图以展示莫霍面的海、陆演化与构造关系。

Many refining techniques have successively been developed abroad in the 1980s, such as high-pressure plasma arc melting, pressure-electro-slag-remelting, counterpressure foundry and powder metallurgy etc.

在20世纪80年代,国外相继开发了高压等离子弧熔炼、增压电渣重熔法、反压铸造法以及粉末冶金等高氮钢冶炼工艺,但我国在这方面的工作相对比较落后。

And the direction query efficiency based on multi-approximate index is compared with that based on taditional external approximation index. 2 The algorithms of nearest neighbor and reverse nearest neighbor about point, line and ploygen based on multi-approximate index are proposed after the virous methods of distance measure are discussed in detail. And the query efficiency of NN and RNN based on multi-approximate index is compared with that based on taditional external approximation index. 3 The basic concept of semi-join and the strategy of distance-direction semi-join are introduced. And the model of distance relationship, direction relationship and the bounding for spatial object are discussed. Then the method is presented about how to implement the query of distance-direction semi-join, and the efficiency of the algorithm based on multi-approximate index is compared with that based on taditional external approximation index.

即:1在方向关系矩阵模型、开域方向模型基础上,讨论了基于多重近似索引下的定性与定量方向检索方法,并通过实验对基于多重近似索引与外部近似索引下的方向检索效率进行了对比分析;2详细讨论了各种距离度量方法,提出了基于多重近似索引下的点、线、面的最邻近查询和反最邻近查询算法,并通过实验对基于多重近似索引与外部近似索引下的最邻近查询和反最邻近查询效率进行比较分析;3介绍了半连接的基本概念,探讨了距离关系、方向关系以及空间对象数量的约束模型,给出了基于多重近似索引下的距离方向半连接实现方法,并通过实验对基于多重近似索引与外部近似索引下的距离方向半连接的效率进行了比较分析。

We analyze the focusing inversion which is based on the minimum gradient support functional provided by Zhdanov, M.

我们在分析了Zhdanov(2004)提出的基于最小支撑泛函聚焦反演方法的基础上,在目标函数中引入对角梯度支撑以改善倾斜电性分界面的反演效果。

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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?