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31. | preference margin |
| 特惠待遇差额;优惠差额 |
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32. | variation margin |
| 变动保证金 |
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33. | head margin |
| 天头 |
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34. | gross margin |
| 毛利 |
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35. | margin trading |
| 信用交易 |
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36. | margin capacity |
| 备用容量 |
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37. | margin microswitch |
| 微型限位开关 |
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38. | preferential margin |
| 优惠差幅 |
|
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39. | department margin |
| 部门毛利 |
|
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40. | margin longitudinal |
| 双层底边纵桁 |
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