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| oval cross-section | |||
| elliptical section | |||
| elliptic section; elliptical cross-section | |||
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| oval section; oval cross-section | |||
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椭圆截 面 : 18 phrases in 4 subjects |
| Agriculture | 1 |
| Space | 1 |
| Technology | 14 |
| Textile industry | 2 |
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