三面体

对回转车削三面体的过程进行了运动学分析，建立了刀尖相对于工件的运动方程，计算了用该方法加工三面体零件时的各个参数。

Aimed at a kind of rotary cutting machine , the machining process of trihedron cutting is kinematically analyzed , and the moving locus equations of cutting edge are deduced .

测量头是一铅质直角三面体.其上装有六个感应式位移传感器；

Six displacement sensors of inductive type are mounted on the measuring head .

对三面体铝合金转镜的模拟结果表明，运用该方法设计转镜的临界点，可保证实际运转中临界点出现在选定的转速范围。

And the calculating results from three-face aluminous mirror indicate that the critical points of new mirror may be guaranteed in the select speed range .

三重八面体变几何桁架机器人间接位置分析的符号解

Symbolic Solutions of Inverse Displacement Analysis for Triple Octahedron Variable Geometry Truss Manipulators

三面柱体可变信息标志系统

Prismatic variable message sign system

同时也证明了三度二面体群上的Cayley图是有理的。

It is also proved that Cayley graph with 3 degree on a dihedral group is rational .

以某水电站F3，F9断层上盘变形体为对象，开展了U形河段三面临空变形体稳定性分析。

Based on the upper plate deformation body of F3 and F9 faults in a hydropower station , stability analysis was made on the three-side hanging deformation body in a U-shape river reach .

水晶中三方偏方面体单形的结晶习性

Crystallization Habits of the Trigonal Trapezohedron Simple Form of Synthetic Quartz

这三个八面体通过三个共用平面联接。

The three octahedra are linked up by three coplanes .

三滑面五面体滑动算例进一步验证该方法的适用性。

The stability of a pentahedron block is further analyzed to verify the applicability of the method .

镶齿三面刃铣刀刀体裂纹分析

Cracking analysis of cutter body for insert three side milling-cutter

基于三面投影的平面体自动构形数据预处理

The pre-processing of auto-formation data based the tri-angle projection of the plane body

基于三面投影的平面体构型

The Plane Body Modeling by Tri-angle Projection

三角帽（帽檐三面卷起的）.复三方偏三角面体类

Cocked hat ; hat with the brim turned up on three sides ditrigonal scalenohedral class