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| 圆柱坐标系 | |||
| 圆柱坐标系统 | |||
| 柱面坐标系 | |||
| 圆柱坐标系 (统) | |||
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| 圆柱坐标系 (统); 柱面坐标系 | |||
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cylindrical coordinate system : 5 phrases in 1 subject |
| Technology | 5 |
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