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Secondly, the causes of software pirate inundation are analyzed from the angles includingproduct features, economy, law and cultural consciousness.

同时简要分析了软件盗版的危害。其次，从产品特征、文化意识、经济、法律的角度分析软件盗版泛滥的成因。

The narrower it is, the quicker the edge change : the wider it is , the more speed and tracking stability on off piste snow and the more ground clearance for extreme edge set angles.

腰部较宽的雪板适合在粉状的雪以及很陡峭的山坡中滑行性能更加出色，宽大的腰部尺寸在滑行中更加的稳定。

For drill point with planar flanks, using toolroom microscope, we measure the angles relevant to unit vector on the flanks and transform these data into design parameters.

虽然用户可以通过反复实验、摸索，找到适当的设计参数，以便刃磨时CNC编程和机床调整，但这不实用，而且是缺乏普遍意义的方法。

A plane figure with four sides and four angles.

由多个多面形或平面限定的立体图形。

A four-sided plane figure with four right angles.

矩形，长方形具有四个边的方形，有四个直角

Geometry a plane rectangle with four equal sides and four right angles; a four-sided regular polygon.

有四个相等的边和四个直角的平面长方形；有四个边的等边多角形。

In this paper, the analytical expressions of seismic input for homogeneous elastic half-space are first derived in oblique incidence of plane SV-wave, and then a finite element model for a real hydropower cavern group composed of main powerhouse- transformer chamber- tailrace surge tank cavern is created. Characteristics of seismic responses such as displacement, acceleration and stress are studied in detail at different incidence angles and some results are compared with those given by the literature.

本文首先推导了平面SV波斜入射下均质弹性半无限空间的地震动输入表达式，然后建立了某水电站主厂房室-主变室-尾水调压室等构成的地下洞室群有限元模型，详细研究了不同入射角度下各洞室的位移、加速度、动应力等地震反应特点，并与文献进行了对比。

In order to imitate the unbounded space wave propagation,the non local boundary condition is used as the absorption boundary condition to cut off the computation domain,and the problems of plane wave incidence at different angles are calculated with the high order PE algorithm.

文章通过引入Padé逼近构造高阶抛物线方程算法，用非局部边界条件作为吸收边界条件，截断计算区域以模拟无界空间波的传播，结合高阶PE算法分别计算不同角度平面波的入射问题。

The uniformity of the beam polarization plane of rotation angles are be tter than ±3°.

测量结果表明：在法拉第旋光器的有效通光面内，光偏振面旋转角的径向分布均匀性优于±3°。

At right angles to the plane of projection.

如果我们将物体放在银幕前，然后利用灯光作正面照射，屏幕上便出现该物件的影子；同样原理，若我们从正面观测物件，所得到的就是直角投影。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。