Gerardus Mercator's projection, published in 1569, was immediately useful because it depicts a line of constant bearing as a straight line, which is handy for Marine navigation.
福西厄斯•墨卡托的投影于1569年问世，马上就派上了用场，因为它把不变的方位描绘为直线，这对航海非常方便。
Trend is the direction of the horizontal projection of a line, measured clockwise from north.
线倾向：它是直线水平投影的方向，自正北顺时针度量。
Draw the projection of the intersection line.
在相交处应画出交线的投影。
This paper introduces the study on omni - directional vision system calibration method using central catadioptric projection property of space line.
利用空间直线的中心折反射投影的特性对全维视觉系统的标定方法进行了研究。
According to the image data possessed, the formation model of equivalent line central projection is adopted to establish the correspondence between image and object space.
根据现有资料情况，确定了采用等效线中心投影的构像模型作为几何处理的数学基础。
This courseware is used for finding the position of the endpoint of two intersecting triangles and drawing the surfaces, the isometric projection of the intersecting line and three-plane projection.
两平面交线课件主要功能用于求解各种位置两平面交线的端点、绘制两平面交线的正等轴测投影和三面投影。
Trend is the direction of the horizont al projection of a line , me a sured clockwise from north.
线倾向：它是直线水平投影的方向，自正北顺时针度量。
This method for the identification of target miss in azimuth makes use of the projection in missile body coordinate system of line-of-sight rate between the missile and target.
研究了利用导引头天线测量的视线角速度在弹体的投影进行目标脱靶方向角识别的原理。
In engineering drawing courses, the projection of point, line and surface is the basis of learning physical projection, which is often difficult for beginners to learn.
在工程制图课程学习中，几何元素点、线、面的投影问题是学习形体投影的基础，也是初学者刚开始接触制图知识，学习中容易感觉困难的部分。
A fast orthogonal edge projection algorithm is proposed for real-time inspection of film defects on production line.
为实现对胶片弊病的实时识别，提出了一种正交边缘投影快速检测算法。
Taking the specially designed planar target with the monocular vision system, the projection line of the reference points is built.
以专门设计的平面与单眼视力系统的目标，参考点的投影线内置。
The projection of the special points on the intersection line of cylinder with oblique cylinder , of cone with half sphere and of oblique cylinder with cone are determined with the analytic method.
本文用解析法确定圆柱与斜圆柱、圆锥与半球及斜圆柱与圆锥的交线上特殊点的投影。
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。
The drawn intersecting line is similar to the shape of its theoretical projection and can satisfy the requirement of engineering drawings.
所绘交线与理论形状的投影作图十分接近，可以满足工程制图的要求。
The connected matrix of topological relationships between vertices was renewed by occlusion matrix, and the projection drawing defined by connected matrix had no hidden line.
利用遮挡矩阵更新表示顶点间拓扑关系的连接矩阵，得到不含隐藏线的投影图。
The model was used to calculate the variations of the canopy shape, the variations of canopy projection area and the tension of the suspension line during the final inflation phase.
利用模型计算了主充气阶段伞衣形状变化、伞衣投影面积变化及伞绳张力。
The dissertation proposes a novel method for vector coding, i. e. Vector Projection method, which approximately represents a vector with the orthogonal projection of its endpoint onto a straight line.
提出一种矢量压缩编码新方法—矢量线上投影法，它将输入矢量用它在某条空间直线上的投影近似表示。
Based on the screen coordinate theory of solid diagram of complementary color, a perspective projection diagram of space surface is drawn using floating horizontal line method.
利用求补色立体图屏幕坐标原理，采用浮动水平线法来绘出空间曲面的透视投影图形。
The projection of the interface Fresnel zone is up to the acquisition line.
映射菲涅尔带是反射面上菲涅尔带在侧线上的投影。
This method proposes simplified computation of projection matrix and effectively adjusts the successive line iterative sequences.
该算法简化了投影系数矩阵的计算，调整了迭代算法逐线校正的迭代顺序。
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。
It was found to be just at that part of the cliff which was between the projection at the mouth of the Mercy and a perpendicular line traced above the heap of rocks which formed the Chimneys.
他们发现如果从形成“石窟”的乱石堆上画一条垂直线到地面来，那么“花岗石宫”在峭壁上的位置就正在这条线和慈悲河口峭壁凸出的地方中间。
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。
In the process of the reconstruction, the filtering line, re-sampling, correction and back-projection are revised respectively according to the detector center excursion.
在重建过程中，根据探测器的中心偏移量，对滤波线方程、滤波前后的重排和校正以及反投影过程进行修正处理。
High resolution range profile(HRRP) is the projection vector sum of target scattering point echoes acquired by wide-band radar along the direction of radar line-of-sight(LOS).
高分辨距离像（HRRP）是宽带雷达获取的目标散射点子回波沿雷达视线方向的投影矢量和。
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。
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。
It focuses specifically on conceptual projection as an instrument of on-line work.
它特别关注概念投射是一种在线工作手段。
It focuses specifically on conceptual projection as an instrument of on-line work.
它特别关注概念投射是一种在线工作手段。
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