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31. | external margin |
| 国外经济盈余 |
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32. | preference margin |
| 特惠待遇差额;优惠差额 |
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33. | preferential margin |
| 优惠差幅 |
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34. | exterior margin |
| 外图廓 |
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35. | gross margin |
| 毛利 |
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36. | receiving margin |
| 接收裕度 |
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37. | margin longitudinal |
| 双层底边纵桁 |
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38. | subcooling margin |
| 过冷裕度 |
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39. | limiting margin |
| 限幅边际 |
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40. | banker's margin |
| 银行存款保证额 |
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