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半椭圆截面
| 屋脊
| 半椭圆截面 | |
| tech. | semi-elliptic section; semi-elliptical section |
| 屋脊 | |
| gen. | crest |
| eng.geol. | hip |
| hydroel.st. | ridge |
| |||
| semi-elliptic section; semi-elliptical section | |||
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半椭圆截面 : 3 phrases in 2 subjects |
| Agriculture | 1 |
| Technology | 2 |
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