This paper proposed a new method to find the intersection line and determine its visibility of two general position planes using overlapped projection lines.
提出用重影线法求解两一般位置平面相交求交线判别可见性的新方法。
A new method was put forward to find the intersection line and determine its visibility of general position lines and planes using overlapped projection lines.
提出用重影线法判断两重影直线的相对位置和求解一般位置直线与平面相交求交点判别可见性的新方法。
Second, we used to find out the intersect lines of shell and nozzles by the means of projection transform.
二是以往通常用投影转换的方法来求得筒体和接管的相贯线，这种方法放样困难、繁复且精度不高。
PROJECTION that preserves the Angle measure between any two lines.
保持任意两条线问夹角的度量不变的射影。
This offers a theoretical ground for setting the region of projection and constructing accurately the lines of intersection.
它为确定截交线的投影范围，准确地绘制截交线，提供了理论依据。
The calculation formula of extreme distance and limit interval to draw curves by straight lines on projection plane is deduced.
推导了投影平面上以直代曲的极限距离计算公式，代曲极限间隔值的探求。
With this view point, all other meridian projection equations of lines in special positions, and the curved surface formed by the meridian projection after being rotated are presented.
文中通过方程序的推导，论证了上述观点，并以此为基础，进一步论述了各种特殊位置直线的子午投影的方程序，以及这些子午投影旋转后所形成的曲面。
Three approaches to the graphic representation for lines of intersection are introduced in this article, namely, central projection, parallel skew projection and arc line projection.
本文介绍了图解截交线的三种方法，中心投射法、平行斜投射法、弧线投射法。
It is in a straight-line projection of the two surface analysis of the phenomenon occurred in the film, from its perspective in geometric space, which leads to the definition of affected lines.
对两条直线在某投影面上发生重影的现象进行分析，从空间角度认识其几何位置，由此得出重影线的定义。
This paper presents the way of changing coordinates in program design, locating the endpoints the intersecting lines and solving the problems with visibility of three-plane projection.
文中主要介绍了程序设计中的坐标变换、交线端点的求解，以及在三面投影中可见性问题的解决方法。
For example, the Mercator projection is widely used by boats and ships because it produces a map in which lines of constant bearing are a straight line, which greatly simplifies navigation.
例如，墨卡托投影是广泛使用艘舟艇，因为它产生的地图中，不断轴承线一条直线，从而大大简化了导航。
Finally, the model is used to calculate the variations of canopy shape, the variations of canopy projection area and the tension of suspension lines during initial inflation phase.
最后利用模型计算了初始充气阶段伞衣形状变化、伞衣投影面积变化及伞绳张力。
Further, the visibility of intersection lines could be determined by projection model. The occlusion matrix made up for the lost depth information during projection.
引入遮挡矩阵存储遮挡信息弥补了投影降维后造成的深度信息损失。
Aiming at the defects of the welding lines, the author adopts the method of projection intercept to calculate the length of the defect exactly and effectively.
本文针对焊缝等缺陷利用投影截距的方法，准确高效地计算出了缺陷的长度。
A curve of a real brain shape is simulated with the curve-fitting methods and EIT in the brain is finished with finite-element methods and Equipotential Lines Back-Projection algorithm.
方法：利用曲线拟合方法模拟大脑外形曲线，借助有限元方法和等位线反投影算法完成脑eit仿真成像。
A curve of a real brain shape is simulated with the curve-fitting methods and EIT in the brain is finished with finite-element methods and Equipotential Lines Back-Projection algorithm.
方法：利用曲线拟合方法模拟大脑外形曲线，借助有限元方法和等位线反投影算法完成脑eit仿真成像。
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