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11. | corrective method |
| 改进方法 |
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12. | improvement patent |
| 改进专利 |
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13. | improvement planting |
| 改进栽植 |
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14. | quality improvement |
| 质量改进 |
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15. | fuel modification |
| 燃料改进 |
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16. | operations improvement |
| 操作改进 |
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17. | Improve on packing |
| 改进包装 |
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18. | modified simplex |
| 改进单纯形 |
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19. | PI (Product Improve) |
| 产品改进 |
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20. | Other Suggestion |
| 改进意见 |
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