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| 1. | sound reduction |
| 降低音响; 减低噪音 |
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| 2. | noise reduction |
| 噪声降低 |
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| 3. | yield reduction |
| 成品率降低 |
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| 4. | oxidant concentration reduction |
| 降低氧化物浓度 |
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| 5. | reduction of rates |
| 降低税率 |
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| 6. | permeability reduction |
| 渗透率降低 |
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| 7. | infant mortality reduction |
| 降低婴儿死亡率 |
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| 8. | reduction of porosity |
| 孔隙度降低 |
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| 9. | reduction of temperature |
| 降低温度 |
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| 10. | noise reduction system |
| 噪声降低系统 |
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