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关注：1
2013-05-23 12:21
求翻译：为方便起见，选地平面上沿钢管走向的一个方向为X轴的正方向；由X方向顺时针方向转90° 为y轴正方向；垂直地面向下为z轴正方向。是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
为方便起见，选地平面上沿钢管走向的一个方向为X轴的正方向；由X方向顺时针方向转90° 为y轴正方向；垂直地面向下为z轴正方向。
问题补充： |
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2013-05-23 12:21:38
[object Object]
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2013-05-23 12:23:18
For the sake of convenience, chosen in the horizontal plane along the direction of the steel pipe to a direction; the direction is the axis X X clockwise direction from the y-axis is 90° vertical surface downward direction; the Z-axis is direction.
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2013-05-23 12:24:58
For convenience, chooses in the horizon a direction which moves towards along the steel pipe is X axis direction; Clockwise transfers by X direction 90° is the y axis direction; The vertical ground is the z axis direction downward.
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2013-05-23 12:26:38
For convenience, one direction of the selected plane along the pipe towards the positive direction of x-axis; transferred from the x direction clockwise 90 ° for the y axis positive direction; ground down the z axis is vertical direction.
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2013-05-23 12:28:18
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