1.
A Study on Angle Measurement of Non-uniplanar Lines in Large-scale Space;
大尺寸空间异面直线夹角测量的研究
2.
Combining Calculation with Drawing to Define the Foot Position of Common Perpendicular of Lines on Different Planes;
算画结合,确定两异面直线公垂线的垂足位置
3.
3D points reconstruction based on the midpoint of skew lines common perpendicular algorithm
异面直线公垂线段中点算法为基的三维点重建
4.
Research on the Problem of the Straight Line Which Two Skew Lines Formed the Same Angle in Space;
空间中与两条异面直线成等角的直线问题的探究
5.
Analysis and Research on the Laser System for Measuring the Angle of Non-coplanar Lines in Space
空间异面直线夹角激光检测系统的分析研究
6.
Study on the Different Surface Linear Understanding Level of the Senior School Students
高中生对异面直线概念理解水平的研究
7.
Application of edge detection in scale angle vision measurement
边缘检测在异面直线夹角视觉检测中的应用
8.
On Students Intelligence Development from the Perspective of Solving the Distance of a Straight Line Across Different Surfaces;
结合异面直线间距离的求解谈对学生智力的开发
9.
A vertical or nearly vertical line or plane.
垂直线，垂直面垂直或近似垂直的线或平面
10.
Adopting the straight-line bearing and asynchronism electrical machineries of conical surface braking, operation is steady.
采用直线轴承及锥面制动三相异步电机，运作平稳。
11.
Limit cycles of a class cubic differential systems with singular integral line
一类具有奇异积分直线的平面三次微分系统的极限环
12.
Something vertical, as a line, plane, or circle.
垂直物垂直的东西，比如垂直线，垂直面或垂直圆
13.
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
14.
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
15.
Singular Boundary Value Problems of Non-linear Equation System on a Half-line;
半直线上非线性方程组奇异边值问题
16.
Differences between Aaounting Strainght-hine Depreciation Law Appraised-Price Straight-line Depreciation Law;
会计直线折旧法与估价直线折旧法的差异
17.
double generator of a ruled surface
直纹曲面的二重母线
18.
vertical body break
辊身沿轴线垂直面折断