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The modified expression of the broad emission-line profiles ire derived for the outflow kinematics model of the BLR driven by the radiation pressure. Taking into account the difference between the two lines HeI λ5876 and Hβ, it is shown the fact that the observed line width of HeIλ 5876 is broader than that of Hβ cannot be explained by the popular outflow BLR model evoked by W. G. Mathews. For comparison, line profiles of the gravitational infall model and orbital disk model are also calculated; the later is in good agreement with the observations Thereupon, conclusion is reached that the gravitational infall is an important process in the real BLR gas motion.

1推导了辐射压加速宽线云团径向外流,以及引力下落和转动等BLR运动学模型的谱线轮廓表达式,并考虑到光致电离计算表明的云团本身对Hβ和HeIλ5876谱线的辐射差异,用数值方法计算了它们的谱线轮廓,发现普遍流行的辐射加速气体外流模型不能解释HeIλ5876线宽大于Hβ线宽的观测事实,而引力下落模型则可以较好地解释观测,因此我们倾向于认为、径向内流运动很可能是BLR内的发射线云团真实运动的一个重要成分。

The magnitude of opened angle at a point pi in the contour can be easily calculated by the law of cosines, and its local extreme correspond to the sharper changes of the contour of the mode.

轮廓上点p处的张角可用余弦定理很方便地求出,而张角的极值点则对应于轮廓急剧变化的地方。

This approach effectively overcomes the shortcoming of the grey level intensity based detection approaches. Not only it can extract the local extremum along with the contour, but also it is robust to the noise in the range images.

该方法克服了基于强度特征的检测方法中存在的一些缺陷,能够有效得提取关键点在轮廓方向上的极值性,并对轮廓上的噪声也有很好的抑制效果。

Finally, a fine estimation can be acquired by the combination of estimation results from both Hough transform and major axis extraction.

在此基础上,基于Hough变换检测目标轮廓的直边,基于轮廓特征点检测获得目标主轴的大致方向,结合Hough变换检测结果与目标主轴信息获得最终的方位角估计。

The graphical display for laser cutting based on industrial PC is presented in chapter 4, from which the programmer can check the program through the map of parts program on the screen.

编程人员可以对照零件加工程序映射到屏幕上的零件轮廓来检查编程错误;在动态图形显示中,采用部分屏动画技术,既能满足图形显示的实时性,又能产生良好的显示效果。在图形显示的基础上,采用定性定量相结合的方法解决了零件轮廓自动回避顶针这一问题。

Engine, this paper found out that the antigalling abilities for parts being tested although quite smooth, even with quenched and ground surfaces were not too high, while the antigalling abilities were quite higher for those surfaces more rougher than the former but possess fairly big negative contour skewness RSK and considerable large mean spacing Sm of profile micro-inequality.

本文通过SRV 试验、Timken 试验和发动机挺杆的台架试验,发现了试件尽管很光滑,甚至是淬硬后精磨的表面的抗擦伤能力并不高,而粗糙度比前者高,但具有相当大的负轮廓偏斜度Rsk ,且具有相当大的轮廓微观不平度平均间距Sm 的表面具有较高的抗擦伤能力,这是由于它们具有较好支承面及众多"微油池"有利于润滑的结果。

In the main-process, the coordinates of nodal points on part outline curve can be calculated by replacing this curve with a linear approximation. The codes expressed in NC program form which can be recognized by NC machine tool are got according to the coordinates of these nodal points in the post-process.

在前置处理中,用直线逼近零件轮廓,得到轮廓曲线的节点坐标:在后置处理中,根据这些节点坐标按照数控程序的格式得到数控机床可以辨认的程序代码。

Through to the outline basic point, nodal calculation procedure, and simulation emulation design of system, can compare outline describe precision, control the quality of part processing, know that the approximate law that described of the part.

通过对零件轮廓的基点、节点计算程序的设计,以及模拟仿真系统的设计,可以比较轮廓描述精度,控制零件加工质量,掌握零件近似描述的规律。

First,the center spine profile and the boundary profile were designed according to the normal trend of lumbar curvature and the position of shoulder rest and lumbar rest.

首先在保证腰弧曲线的正常形状和保证肩靠与腰靠的正常高度与宽度的前提下,设计了骨架靠背的中心脊线轮廓和边界轮廓线;利用中心脊线和边界线上取等比例点并构造样条线的方法,设计了横向断面线。

Moreover, a boundary length normalized energy function is designed to describe the building boundary. The boundary extraction is implemented by a global optimization of the function on a graph.

另外,设计了一种长度归一化的能量函数来描述建筑物轮廓,并运用图优化算法全局寻优,实现对建筑物轮廓的提取。

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推荐网络例句

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。

Closes the eye, the deep breathing, all no longer are the dreams as if......

关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。