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- This paper presents a forward kinematics model with natural coordinates for a 4-UPU (universal joint-prismatic joint-universal joint) spatial parallel manipulator. 摘要运用自然坐标法研究了空间4-UPU(万向铰-移动铰-万向铰)并联机器人的运动学正解问题。
- New analysis of natural coordinates 自然坐标系新析
- Hence, the problems concerning the expression of position vector in the global coordinate system and the local coordinate system, and the numerical area integration by the natural coordinates were solved thoroughly. 这样,完善地解决了单元中任意点在整体坐标与局部坐标的表示问题和基于局部自然坐标的面积分和体积分的数值积分的依据问题。
- Its geometrical invariability is kept by using natural coordinate interpolation functions. 该单元列式简明,采用自然坐标插值,保持了坐标的几何不变性;
- Natural coordinate system and right angle coordinate system are equivalent when Newton law of motion is used in the dynamics problems of curve motion of a particle. 摘要质点曲线运动的动力学问题,在运用牛顿定律解题时,既可选用直角坐标系,又可选用自然坐标系。
- Natural coordinate system has advantages in solving the problems which have constraining anti-forces, and constraining anti-forces only appear in an-axis dynamics equation. 由于自然坐标系本身特点,其用在含有约束反力解题时,约束反力只出现在一个方向的动力学方程中。
- Equivalence between Local Natural Coordinates and Oblique Cartesian Coordinates 局部自然坐标与斜交笛卡儿坐标的对等性
- It is natural for a cat to catch mice. 猫捉老鼠是本能。
- It's natural to slack2 off towards the end of a hard day's work. 一天紧张工作快结束的时候有些放松是自然的。
- Many natural materials are becoming scarce. 许多天然原料越来越少。
- Our motherland flows with natural resources. 我们祖国蕴藏着丰富的天然资源。
- Events took their natural course. 事态依自然进程发展。
- She has a natural wave in her hair. 她的头发自然卷曲。
- Magnetism is a natural phenomenon. 磁力是一种自然现象。
- It is considered that with the ecological environment worsens day by day,keeping the human being and the nature coordinated development appears especially important. 从生态哲学的角度,对科学发展观进行解读,认为随着生态环境日益恶化,保持人与自然之间的协调发展显得尤为重要。
- It is difficult to be natural when one is tense. 人在紧张的时候很难泰然自若。
- The egoism of an artist sometimes seem natural. 艺术家的自负有时看起来是自然的。
- They used only natural pigments to dye the wool. 他们只用天然颜料染毛织品。
- Children are natural exhibitionists. 儿童天生喜欢自我表现。
- Everything we used was made from natural materials. 我们所用的一切都是由天然材料做成的。