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曲线

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The segment arrangement on circular curves has proven theoretical support; the segment arrangement on transition curves, however, has no theoretical support and is usually executed by means of VMT systems equipped on shield machines. On basis of the relevant survey theories and the actual conditions of the turning rings, the author probes into the segment arrangement on transition curves in the paper.

对于圆曲线的管片排版已有了相对较为成熟的理论,而缓和曲线上的管片排版以往通常是根据盾构机VMT来选择,没有成型的理论支持,为此,结合测量理论和弯环管片的实际,探索出在缓和曲线上准确选择弯环管片理论排版的方法。

The stress-strain curve, unload curve and secondary loading curve of the honey- comb cardboard were gained and analysed.

在试验的基础上,研究蜂窝纸板的力学性能,得到了蜂窝纸板的压缩曲线及卸载曲线、二次加载曲线

As the rapid development of highway,the widening of easement curve segment is more and more at a premium,but the calculation of coordinates and length of inside and outside line is very complex,however,the introduction of this content is very little .

随着高速公路的快速发展,缓和曲线段的加宽越来越受到重视,但是加宽后的内外边线坐标和曲线长的计算非常麻烦,关于这方面的介绍也非常少,故通过理论计算,提出内外边线的坐标和曲线长的计算公式,具有一定的参考价值。

This method is an improvement of existing methods to construct nearly order elliptic curves using complex multiplication. To get elliptic curves with nearly prime orders, the time complexity of this method is O , but to get elliptic curves with prime orders, the time complexity arises to O .

该算法是现有利用复乘构造近乎素数阶椭圆曲线方法的改进,利用该算法构造近乎素数阶椭圆曲线的时间复杂性为O,同时,该算法可用于构造素数阶椭圆曲线,但时间复杂性上升为O。

Results indicate that when the strain rate is 1200 s-1, the twin number of samples in different orientation increases with plastic strain increasing; when the strain rate increases to 2800 s-1, the σ-ε curves have no obvious charges as the angle is 0o and 45o, compared with that at 1200 s-1; however the σ-ε curves vary from concave to convex when the angle is 90o, because thermal softening has occurred with increasing plastic strain, which results in the number of twin decreasing, and smaller strain hardening

结果表明:当加载应变率为1200 s-1时,不同取样方向的样品中孪晶数量均随塑性变形应变量的增大而增多;当加载应变率增大到为2800 s-1时,取样方向为0°和45°、流变曲线形状较应变率为1200 s-1时没有明显变化,而取样方向为90°时曲线形状由应变率为1200 s-1时的凹形变为凸形,曲线形状变化的原因是由于应变量增大,热软化效应使得孪

Linear error curve can be concave curve, it could be a convex curve.

线性误差曲线可以是凹形曲线,也可以是凸形曲线

The observed pressure derivative curve shows a concave shaped curve like a dual porosity behavior, but the curve never reaches the second flat state.

观察到压力导数曲线呈凹状曲线就像一个双重介质行为,但该曲线从未到达的第二个单位。

An image conic can be the projection of either a planar conic or silhouette of a conicoid. We show that at least three images, taken from the same position with different camera orientations, of two planar conics, or two conicoids, or one conic and one conicoid, are needed for the calibration, and a closed-form solution can be obtained. Our new conic based calibration technique requires no knowledge of camera's orientations, and relies solely on image correspondences.

在不同的方位拍摄三幅或三幅以上图像,每幅图像至少包含两个空间平面二次曲线、或两个二次曲面、或一个平面二次曲线与一个二次曲面的投影,利用图像之间的二次曲线对应关系,可以确定摄像机的内参数矩阵,同时可以获得摄像机不同方位之间的旋转矩阵。

Many subdivision schemes have been proposed in the recent three decades, however, most of them are not capable of both reproducing families of curves widely used in Computer Graphics such as conics, and controlling the shape of the limit curve by a tension parameter.

近三十年来已有多种细分方法被相继提出,然而大多数细分方法不能既生成在计算机图形学中广泛应用的特殊曲线,例如圆弧曲线,又存在一个松弛参数能够调整极限曲线的形状。

Facing some difficult design which exists in the cam contour curve of indexing motion mechanism against domestic company presently,the conjugate contour curve was viewed as the idea of design and the motion animation was used as the method of design.

针对目前国内企业在间歇运动机构凸轮轮廓曲线设计中所遇到的困难,采用共轭曲线的设计思想和运动模拟仿真的设计思路,并通过案例,介绍了凸轮轮廓曲线的设计方法。

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I will endeavour to find you some assistance.

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起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像,后来回台湾,甚至去年在北京,居然也四处看见她的海报,才惊讶她的魅力之大。

Ah may dee:You are chinese living in a democratic country.

你是居住在民主国家的中国人吧。