双语例句原声例句
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假设A是y方向上的,单位矢量,则是z方向上的单位矢量。，and，B，is，the，unit，vector，in，the，z，direction。,那A点B是多少呢？
Suppose A itself is the unit vector in the y direction B Then A dot B is what?
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单位矢量,始终指向,轴的正方向,轴方向的单位矢量，and，the，unit，vector,是这个。
Unit vectors are always pointing in the direction of the positive axis x in the x direction is this one.
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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。
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.
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i and j are unit vectors in the x and y directions.
和 j 分别是 x 和 y 方向上的单位矢量
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Unit vector i points away from the origin in the x direction.
单位矢量 i 从原点指向 x 轴正方向
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