A new method to judge the visibility for line and plane intersection is presented.
提出了可直接判断直线与平面相交时可见性的方法。
A right angle plane reflector is added to the evacuated tube,surrounded by sunbeams to form a optimal absorbing system.
从利用太阳能为家庭提供开水的思路出发,研制出一种配有阳光环绕式直角平面反射器的玻璃真空管太阳热水/开水器。
The projection sequence of plane graphs apex and relationship of the sequence and plane faces were discussed in this paper.
提出并论证了各种位置直线与平面相交,直线在相邻两投影面上可见性的投影规律。
Lines pierce the sphere in points.
直线与球面相交为点。
The point at which a line, or the curve in which a surface, intersects a coordinate plane.
交点，交线线与坐标平面相交的点或一表面与坐标平面相交的曲线
A line or plane perpendicular to a given line or plane.
正交线（面）一条或一个与给定直线或平面垂直的直线或平面
The angle or inclination of a line or surface that meets another at any angle but90=.
斜角，斜面一直线或平面与另一（直线或平面）相交所成的除90°外的任意角或倾角
The vertical line meets the horizontal one here.
垂直线与水平线在此相交.
The distance from the origin to the point at which a line, curve, or surface intersects a coordinate axis.
截距从原点到一条直线、曲线或平面上的点的距离，与坐标轴相交
Two Theorems for the Real Line from the Crossing of Plane and Quadratic Cone and Their Application
有关平面与二次锥面相交成实直线两个定理及其应用
Of, relating to, or designating a line and a plane that do not intersect.
一线与一面平行的属于、有关或指出不相交的一条直线与一个平面的
The points x and y are where the bedding traces cut the horizontal surface.
层面迹线与水平面相交于XY两点。
Line A crosses line B at right angles.
A 线与B 线成直角相交。
"If the horizontal line does intersect this cure, draw a vertical line from the intersection to the abscissa."
若水平线的确与此曲线相交,就从此交点向横坐标画一条垂直线
Of, relating to, or designating two or more straight coplanar lines that do not intersect.
平行线的属于、有关或指出两条或多条不相交的共面直线的
The method of handling the hidden lines of raised plane object with two intersecting lines has been presented.
本文论述了用两相交直线处理凸平面立体隐藏线的方法。
Study on the problem of possition relationships between plane and plane,straight line and straight line and straight line and plane in space;
空间中平面与平面、直线与直线及直线与平面间位置关系研究
The line cuts the circle at two points.
一直线与圆相交於两点.
Surf-Surf Intersection Curve
曲面与曲面相交求曲线
A plane curve formed by the intersection of a right circular cone and a plane parallel to an element of the cone.
抛物线一个直立圆锥和平行于该锥体中轴的平面相交形成的平面曲线
