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| 三力矩定理 | |||
| 三弯矩定理; 二弯矩定理 | |||
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| 三弯距原理; 三弯矩定理; 三力矩定理 | |||
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theorem of three moments : 4 phrases in 2 subjects |
| Bridge construction | 2 |
| Technology | 2 |
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