引入线

Source line bias is an error introduced by a non-zero resistance in the ground loop of the read/write circuits.

源极线偏置是由读取/写入电路的接地环路中的非零电阻引入的误差。

By introducing the two dimensional homogeneous coordinates of an infinite point on Euclidian plane,the point coordinates and linear coordinates of an infinite point in straight lines,some theorems and conclusions referred to infinite points are applied in the classifications of structures in this paper.

引入了欧氏平面上无限远点的二维齐次坐标和直线上无限远点的点坐标及线坐标，引用了与无限远点有关的一些定理及结论于结构的分类中。从而给出了可变体系中的常变与瞬变在结构形式上的区别，完善了杆系平面结构几何组成规则的内容

Firstly, This paper processes geometry filtration based on character of orbit's apogee and perigee after orbit model is analyzed and based. Secondly Space Debris is separated into two kinds, coplanar and not coplanar according as location interrelation of target and debris. In Dynamic filtration's processing, considering prediction time limit and orbit perturbation, secular effects which have increaser effect is considered so that some need catching danger time point is appeased, some law about time when target and debris pass intersectant line each other is inferred, when debris and object are in different plane and some similar law also is inferred otherwise. The time list is arithmetical progression. These laws can improve calculation efficiency remarkably; Lastly orbit predict is a course approaching least distance. Danger time point in the last step become beginning time point from which debris and object's position and velocity are calculated by SXP4 Model which is an analytic model.By result, determine that relative movement trend is closer or apart, farther calculate the interval apart from time when predictive least relative distance occurs. Least relative distance and time when least distance occurs is calculated finally. It is a fast approach course adopting varied interval.

本文在分析、建立轨道摄动计算模型的基础上，首先采用基于轨道远、近地点特征对大量编目在册的空间碎片进行初步几何静态筛选，然后根据碎片与目标轨道面的相对位置特点把碎片分为异面与准共面两种情况以进行动态筛选，在筛选过程中考虑到预报时限长度和轨道摄动影响，引入了轨道摄动中具有积累效应的长期项以满足危险时间点的捕捉要求，利用了长期项摄动变化线性的特点导出了碎片与目标异面情况下各自过交线的时间序列成准等差数列的规律性和准共面情况下类似的规律性，从而显著地提高了前期轨道筛选的计算效率；最后对剩余危险碎片和目标飞行器利用SXP4轨道预报模型在前期轨道筛选的基础上以各个危险探测时间点为预报的时间起点，并根据预报计算结果，分析目标和碎片在该时间点的运动趋势是相互远离还是相互接近，推出预计最小相对距离发生时刻相对此刻的时间长度，得到其随时间变化的局部最小相对距离以及危险距离发生的时刻和相对速度，这是一个采用变时间步长、快速逼近最小相对距离的过程。

And tours the Long Bridge Park, visits the Hangzhou three strange scenic spots, same year "the Tale of the White Snake" center, the white wife and Xu Xian met it to judge the bridge unceasingly, the isolated hill was not orphaned, Liang Shanbo with wished the place long bridge which English 18 saw off not to be long In Guozhuang's has a Qing Dynasty west Hangzhou Xihu Yang Gongdi the private garden, this garden is the Wuxi merchant Guo indanthrene constructs, therefore names calls the Guozhuang, he has constructed very many small bridge over the flowing streams, pavilion pavilion in the garden, has introduced Xihu's real water in the garden, therefore also has name of the rockery real water.

然后我们去珍珠工厂去了解珍珠的养殖过程。再游览西湖新天地，西湖博物馆，新西湖南线，远眺雷锋塔。并游览长桥公园，参观杭州三怪景点，当年《白蛇传》中，白娘子和许仙相会之处断桥不断，孤山不孤，梁山伯与祝英台十八相送的地方长桥不长。郭庄在杭州西湖西面的杨公堤上有一座清代的私家花园，此园是无锡商人郭士林所建，故取名叫郭庄，他在园内兴建了很多小桥流水、楼阁亭台，把西湖的真水引入了园内，故又有假山真水之称。

Aimed at the needs of virtualized relationship in virtual environment, we introduce non-photorealistic rendering into virtual reality and presented a novel algorithm for virtualized relationship generation in image based virtual environment based on line integral convolution.

针对基于图像的虚拟场景虚化关联的需要，将非真实感绘制技术引入虚拟场景中，提出了一种基于线积分卷积的场景虚化关联生成方法。

According to the projection space, line and plane can be divided into upward-traveling and downward-traveling. The concepts of near axial-terminal and far axial-terminal to the straight line projection is introduced. The rule of the visibility of line and plane intersection is deduced.

将直线和平面按其在投影空间的位置，分为上行和下行两类，对直线的投影引入近轴端和远轴端的概念，有助于对线面相交空间位置的理解，而且使直线与平面相交可见性的规律更加清晰和直观。

The tapered line theory in circuit can be applied to the design of the special-shaped monopole antenna in order to obtain better electrical characteristics.

电路中的渐变线理论可以引入到异型单极子天线的设计中，以获得更为良好的电特性。

Based on chapter two, In chapter three, the method of multiple scales is introduced to the study of the multiple-dimensional nonlinear stochastic systems under random external excitation. Using method of multiple scales, we strictly deduce the equation of modulation of amplitude and phase. The effects of random excitations are analyzed; numerical simulations verify the results. Theoretical and numerical simulations show that when the intensity of the random excitation increases, the nontrivial steady state solution may be changed from a limit cycle to a diffused limit cycle.

在第二章基础上，第三章将多尺度法引入到相应的随机系统的研究中；严格推导了系统的约简方程，用矩方法求出稳态解应满足的方程，获得一些结果；并且数值模拟结果与理论推导的结果是一致的；并注意到，与其对应的确定性系统相比较，系统响应从周期解变为近似周期解，系统的相轨线从极限环变为扩大的近似极限环；随着激励带宽的增大，此扩大的近似极限环的宽度将增大。

The preliminary optimization is carried on for which the ogee shape factors of the duct are selected to be optimized, and the RCS and flow loss coefficient are considered as objectives.

在进气道腔体的优化中，分析了内管道外形多目标优化中的层次性，将大系统理论中多层次优化方法引入进气道内管道设计中，选择S弯曲线的形状参数为优化的参数，以进气道腔体的RCS、流动损失系数为目标函数，进行了初步的优化计算。

Owing to the increase of the line Q-factor, the electronics shifts of the atomic fountain frequency standard are reduced by 2 orders compared with that of the atomic beam standard when equivalent servo systems are used.

由于原子喷泉跃迁谱线Q值比铯束基准提高两个数量级，故在伺服电路精度相同时，原子喷泉频标中由伺服电路引入的频移将减小两个量级。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。