角形球面

Angular exported, but can prove that the proposed formula is applicable to any spherical triangle .

角形导出的，但是能够证明所得公式适用于任何球面三角形。

A crescent-shaped portion of a plane or sphere bounded by two arcs of circles.

球面二角形由圆的两弧合成的球，或飞机的月牙形的那部分

Based on the instantaneous motion of the moving platforms, the uncertainty configuration conditions and simplified uncertainty configuration equations are obtained for the widely studied parallel manipulators, such as planar 3-DOF parallel manipulator, spherical 3-DOF parallel manipulator, 6-SPS triangular platform parallel manipulator, three-branch 6-DOF parallel manipulator, twotriangular-platform parallel manipulator, DELTA parallel manipulator, 5-DOF parallel manipulator, two-tetragonal-platform parallel manipulator, pentagonal platform parallel manipulator and Stewart platform parallel manipulator.

采用这一方法，根据国内外常用的并联机器人机构的形式，建立了平面3自由度并联机器人、球面3自由度并联机器人、三角平台并联机器人、三支链6自由度并联机器人、双三角平台并联机器人、DELTA并联机器人、5自由度并联机器人、双四角平台并联机器人、五角平台并联机器人和Stewart平台并联机器人的奇异位形条件方程，除了Stewart平台并联机器人外，这些条件方程均为低于6阶的行列式，机器人结构类型不同，其简化程度各不相同。

Specialized in manufacturing GB screws, pan head screws, lock tool screws, furniture screw, hex socket screws, nuts, carriage bolts, special bolts, pins, plain head hex socket screws, rivets, sphere screws, truss head screws, set screws, various bolts and non-standard screws.

专业生产各类国标螺丝；盘头螺丝；锁具配套螺丝；家具配套螺丝；内六角螺丝；螺母；马车螺栓；异形件螺栓；销；平头内六角螺丝；对扣螺丝；铆钉；球面螺丝；大扁头螺丝；各种非标；各种螺栓；紧定螺丝

What are your goals and strategies for growth?

你的成长目标和策略是什么？

And unto the angel of the church in Sardis write; These things saith he that hath the seven irits of God, and the seven star I know thy works, that thou hast a name that thou livest, and art dead.

3：1 你要写信给撒狄教会的使者，说，那有神的七灵和七星的，说，我知道你的行为，按名你是活的，其实是死的。