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| 阶梯式变动成本 | |||
| 步增变动成本; 阶梯变动成本 | |||
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| 梯式变动成本 | |||
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step variable cost : 4 phrases in 4 subjects |
| Business | 1 |
| Economy | 1 |
| Finances | 1 |
| Technology | 1 |
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