一个男孩子背对着摄像机站着,弯身靠着大门的门楣,抓着门柱的手上戴着一枚她熟悉的戒指。
We passed the finger-post, and held straight on to the churchyard.我们经过了指路的牌子,便一直向乡村的教堂墓地走去。
A kinematics model by post D-H method for 4R-robot was offered in this paper, which derived the manipulator finger position and its attitude with unit vectors of direction cosine.采用D-H后置法建立了4R机器人运动方程,建立机器人执行机构在空间相对位置关系的数学模型,由此可解出手部位置和用单位矢量方向余弦表示的姿态。