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Terms for subject Technology containing principal direction | all forms | exact matches only | in specified order only
| English | Chinese |
| principal direction of curvature | 主曲率方向 |
| principal direction of distortion | 主变形方向 |
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| English | Chinese |
| principal direction of curvature | 主曲率方向 |
| principal direction of distortion | 主变形方向 |